ASTROSAT CZTI

Data Quality Report

Orbit 58803

Creation date: 2026-08-10T17:34:00.953299
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/AS1A14_106T01_9000006596_58803cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58803cztM0_level2_quad_clean.evt
Size (bytes)635,060,16085,613,760
Size605.6 MB 81.6 MB
Events in quadrant A4,660,386611,781
Events in quadrant B3,881,894651,394
Events in quadrant C3,959,065563,915
Events in quadrant D10,541,550346,448

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177673
B0154841
C0158491
D0354321

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59933545.906891%
B59933535.890205%
C59944207.007007%
D5994270445.111778%

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 7182 5992 253 253 3.52% 4.22%
B 7183 5993 226 226 3.15% 3.77%
C 7184 5994 332 332 4.62% 5.54%
D 7184 5994 2609 2609 36.32% 43.53%

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 64 1396040 7981.64 697 679 174.8
A 10 251 426917 2438.14 697 679 174.8
A 15 233 53811 303.92 697 679 174.8
B 4 236 256396 1743.04 681 659 146.7
B 10 44 254259 1728.47 681 659 146.7
B 4 201 140081 950.26 681 659 146.7
C 13 3 991103 5473.26 656 649 181.0
C 6 13 171119 942.02 656 649 181.0
C 12 249 70890 388.15 656 649 181.0
D 12 110 5927972 37625.05 553 527 157.5
D 11 129 1998645 12683.25 553 527 157.5
D 12 33 123793 782.44 553 527 157.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct