ASTROSAT CZTI

Data Quality Report

Orbit 20170211_A02_108T01_9000001024_level2

Creation date: 2018-05-17T22:22:57.288146
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A02_108T01_9000001024cztM0_level2.evt modeM0/AS1A02_108T01_9000001024cztM0_level2_quad_clean.evt
Size (bytes)12,487,970,8801,973,761,920
Size11.6 GB 1.8 GB
Events in quadrant A116,801,04611,844,481
Events in quadrant B76,731,65012,715,134
Events in quadrant C87,133,95812,342,342
Events in quadrant D86,674,69411,837,961

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04570330
B03356990
C03679800
D03668740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032820
B032820
C032820
D032820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02530
B02530
C02530
D02530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1611491858311.531564%
B16114918271.133733%
C16114916631.031964%
D16114931651.964021%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 186410 161174 15182 15182 8.14% 9.42%
B 186410 161176 46 46 0.02% 0.03%
C 186410 161178 160 160 0.09% 0.10%
D 186410 161176 1508 1508 0.81% 0.94%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 239 45349216 12427.67 18258 17873 3647.6
A 15 234 869892 233.58 18258 17873 3647.6
A 0 226 173236 42.59 18258 17873 3647.6
B 0 214 1389278 380.39 19260 18805 3602.8
B 12 111 379741 100.18 19260 18805 3602.8
B 11 111 303386 78.99 19260 18805 3602.8
C 9 68 13671548 3193.97 18592 18689 4274.6
C 1 16 693842 157.95 18592 18689 4274.6
C 13 61 143898 29.29 18592 18689 4274.6
D 2 14 3268214 729.43 18472 17932 4455.9
D 13 105 3181487 709.97 18472 17932 4455.9
D 1 52 1905095 423.52 18472 17932 4455.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter