ASTROSAT CZTI

Data Quality Report

Orbit 58573

Creation date: 2026-07-26T06:32:41.893066
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_044T04_9000006592_58573cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58573cztM0_level2_quad_clean.evt
Size (bytes)515,859,84091,232,640
Size492.0 MB 87.0 MB
Events in quadrant A6,127,290551,076
Events in quadrant B3,827,187656,915
Events in quadrant C4,518,433556,097
Events in quadrant D4,107,210535,781

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227334
B0160052
C0181872
D0169322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A663390913.704206%
B66331682.532791%
C66334987.507915%
D66332603.919795%

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 7718 6828 707 707 9.16% 10.35%
B 7717 6828 55 55 0.71% 0.81%
C 7718 6829 379 379 4.91% 5.55%
D 7718 6829 201 201 2.60% 2.94%

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 10 251 1697480 10023.38 685 669 169.3
A 3 14 1074168 6341.36 685 669 169.3
A 15 233 338838 1997.63 685 669 169.3
B 0 171 441753 2835.76 724 698 155.5
B 8 234 163650 1047.7 724 698 155.5
B 4 171 128852 823.96 724 698 155.5
C 4 5 851490 4492.92 688 684 189.4
C 1 12 471634 2486.98 688 684 189.4
C 12 252 148257 779.3 688 684 189.4
D 2 249 673823 3414.92 691 660 197.1
D 8 240 365194 1849.26 691 660 197.1
D 2 120 69356 348.49 691 660 197.1

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