ASTROSAT CZTI

Data Quality Report

Orbit 35373

Creation date: 2022-04-18T16:01:33.707500
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A11_099T01_9000005068_35373cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35373cztM0_level2_quad_clean.evt
Size (bytes)554,497,92062,156,160
Size528.8 MB 59.3 MB
Events in quadrant A2,646,729393,615
Events in quadrant B5,655,904375,892
Events in quadrant C3,142,116380,240
Events in quadrant D4,980,736351,938

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112983
B0204712
C0125562
D0185022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A542850.092115%
B542896817.833456%
C54281602.947679%
D54283376.208548%

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 7130 5429 1 1 0.01% 0.02%
B 7130 5429 798 798 11.19% 14.70%
C 7130 5429 123 123 1.73% 2.27%
D 7130 5429 229 229 3.21% 4.22%

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 10 83 117043 893.95 638 626 130.2
A 9 143 20752 154.55 638 626 130.2
A 14 254 15498 114.2 638 626 130.2
B 4 251 2659709 23077.19 590 573 115.2
B 5 172 475873 4124.87 590 573 115.2
B 5 200 60048 516.15 590 573 115.2
C 0 10 392732 2710.07 612 616 144.7
C 15 214 223168 1538.14 612 616 144.7
C 3 233 118460 814.47 612 616 144.7
D 8 195 1523778 10319.06 602 585 147.6
D 2 152 291545 1971.15 602 585 147.6
D 13 249 251561 1700.27 602 585 147.6

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