ASTROSAT CZTI

Data Quality Report

Orbit 57668

Creation date: 2026-05-26T09:09:53.350090
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_125T09_9000006578_57668cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57668cztM0_level2_quad_clean.evt
Size (bytes)433,650,240103,400,640
Size413.6 MB 98.6 MB
Events in quadrant A3,619,172679,948
Events in quadrant B3,282,757738,053
Events in quadrant C4,625,362639,153
Events in quadrant D3,999,218602,977

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155140
B0144840
C0183570
D0166170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67611752.588375%
B67611392.055909%
C67612924.318888%
D67612173.209584%

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 9051 6762 125 125 1.38% 1.85%
B 9051 6762 32 32 0.35% 0.47%
C 9051 6763 232 232 2.56% 3.43%
D 9051 6763 174 174 1.92% 2.57%

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 7 223 565734 3094.34 747 727 182.6
A 7 160 58498 316.39 747 727 182.6
A 10 251 53247 287.63 747 727 182.6
B 10 16 98166 624.51 742 716 156.0
B 5 185 95063 604.63 742 716 156.0
B 10 247 31483 197.17 742 716 156.0
C 15 224 1181016 5980.39 726 720 197.4
C 14 254 208003 1050.27 726 720 197.4
C 12 2 136787 689.43 726 720 197.4
D 8 240 374364 1837.34 721 686 203.4
D 2 120 222079 1088.57 721 686 203.4
D 13 138 213981 1048.75 721 686 203.4

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