ASTROSAT CZTI

Data Quality Report

Orbit 59147

Creation date: 2026-09-02T22:10:45.561448
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/AS1T05_264T01_9000006602_59147cztM0_level2.fits modeM0/AS1T05_264T01_9000006602_59147cztM0_level2_quad_clean.evt
Size (bytes)698,866,56093,021,120
Size666.5 MB 88.7 MB
Events in quadrant A3,974,396665,497
Events in quadrant B3,422,211737,432
Events in quadrant C3,740,344660,340
Events in quadrant D14,190,292266,189

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167372
B0149322
C0160122
D0470052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69832503.580123%
B69831271.818703%
C69831742.491766%
D6982434162.174162%

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 7803 6983 131 131 1.68% 1.88%
B 7803 6983 20 20 0.26% 0.29%
C 7803 6983 87 87 1.11% 1.25%
D 7801 6981 4080 4080 52.30% 58.44%

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 15 233 584472 3004.97 790 768 194.2
A 10 251 246037 1262.67 790 768 194.2
A 3 245 21608 107.29 790 768 194.2
B 4 201 107038 620.77 788 756 171.2
B 5 236 60619 349.65 788 756 171.2
B 5 185 57088 329.02 788 756 171.2
C 5 250 251243 1178.72 775 768 212.5
C 13 3 136428 638.41 775 768 212.5
C 6 223 112244 524.6 775 768 212.5
D 12 1 8301031 55760.97 518 496 148.9
D 12 110 2928885 19672.2 518 496 148.9
D 8 129 359461 2411.44 518 496 148.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct