ASTROSAT CZTI

Data Quality Report

Orbit 59315

Creation date: 2026-09-14T04:31:33.819592
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_021T06_9000006606_59315cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59315cztM0_level2_quad_clean.evt
Size (bytes)538,323,840101,813,760
Size513.4 MB 97.1 MB
Events in quadrant A4,550,096662,802
Events in quadrant B4,960,070699,423
Events in quadrant C3,031,328665,974
Events in quadrant D6,835,322561,261

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187492
B0198642
C0145502
D0252442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70814426.242056%
B70816769.546674%
C7081320.451914%
D708083411.779661%

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 7680 7081 496 496 6.46% 7.00%
B 7680 7081 552 552 7.19% 7.80%
C 7680 7081 4 4 0.05% 0.06%
D 7679 7080 702 702 9.14% 9.92%

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 1533489 8212.22 750 731 186.6
A 13 248 27064 141.09 750 731 186.6
A 15 16 13599 68.94 750 731 186.6
B 4 236 1563300 10052.84 733 705 155.4
B 5 236 123876 792.41 733 705 155.4
B 4 171 75200 479.26 733 705 155.4
C 12 252 44308 212.99 750 741 204.6
C 6 13 17597 82.41 750 741 204.6
C 14 96 14207 65.83 750 741 204.6
D 12 110 3394789 16750.12 714 683 202.6
D 11 129 256683 1263.38 714 683 202.6
D 2 249 97080 475.73 714 683 202.6

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

TCT plots

Parameter TCT0 TCT_healed
Tct