ASTROSAT CZTI

Data Quality Report

Orbit 20171121_A04_049T01_9000001710_level2

Creation date: 2017-11-22T17:05:34.770445
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/AS1A04_049T01_9000001710cztM0_level2_bc.evt modeM0/AS1A04_049T01_9000001710cztM0_level2_quad_clean.evt
Size (bytes)1,552,236,480303,704,640
Size1.4 GB 289.6 MB
Events in quadrant A13,545,8421,829,234
Events in quadrant B8,588,6831,934,207
Events in quadrant C5,265,3911,998,657
Events in quadrant D17,758,4051,570,716

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05520
B05520
C05520
D05520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0944700
B0691070
C0549630
D01177300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27083370113.665399%
B2708311864.379131%
C27083670.247388%
D27083924034.117343%

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 31965 27083 348 348 1.09% 1.28%
B 31965 27085 41 41 0.13% 0.15%
C 31965 27084 0 0 0.00% 0.00%
D 31965 27014 1817 1817 5.68% 6.73%

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 8 5 8021739 28876.64 1273 1249 277.8
A 1 162 284031 1018.12 1273 1249 277.8
A 9 143 178777 639.16 1273 1249 277.8
B 4 239 2155018 8486.29 1339 1305 253.8
B 3 64 503617 1979.26 1339 1305 253.8
B 15 204 196329 768.45 1339 1305 253.8
C 12 4 12530 36.55 1340 1317 306.8
C 13 61 7943 21.6 1340 1317 306.8
C 1 5 6699 17.54 1340 1317 306.8
D 1 52 10126383 40584.05 1032 989 249.5
D 13 152 2484235 9953.21 1032 989 249.5
D 8 195 160174 638.04 1032 989 249.5

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