ASTROSAT CZTI

Data Quality Report

Orbit 20220507_A09_143T04_9000005120_level2

Creation date: 2026-01-02T11:33:30.384489
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/AS1A09_143T04_9000005120cztM0_level2.fits modeM0/AS1A09_143T04_9000005120cztM0_level2_quad_clean.evt
Size (bytes)123,212,16079,850,880
Size117.5 MB 76.2 MB
Events in quadrant A754,398397,729
Events in quadrant B708,582390,514
Events in quadrant C721,424372,573
Events in quadrant D635,890344,841

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272190
B0303940
C0318490
D0328510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13181110.083453%
B131812882.184963%
C131812992.268417%
D131811431.084895%

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 18021 13181 0 0 0.00% 0.00%
B 18021 13178 0 0 0.00% 0.00%
C 18021 13175 0 0 0.00% 0.00%
D 18021 13179 0 0 0.00% 0.00%

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 7 110 662 9.51 197 186 50.1
A 9 19 636 8.99 197 186 50.1
A 0 29 588 8.03 197 186 50.1
B 2 9 638 11.86 187 179 38.7
B 3 80 595 10.75 187 179 38.7
B 2 8 537 9.25 187 179 38.7
C 3 203 616 8.7 190 178 50.3
C 3 202 581 8.01 190 178 50.3
C 1 81 573 7.85 190 178 50.3
D 7 3 488 6.4 181 166 50.3
D 6 231 472 6.09 181 166 50.3
D 10 113 469 6.03 181 166 50.3

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