ASTROSAT CZTI

Data Quality Report

Orbit 56199

Creation date: 2026-02-16T13:47:39.894354
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_083T04_9000006550_56199cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56199cztM0_level2_quad_clean.evt
Size (bytes)717,739,20081,777,600
Size684.5 MB 78.0 MB
Events in quadrant A12,003,851293,956
Events in quadrant B3,417,327663,640
Events in quadrant C6,287,496515,812
Events in quadrant D4,353,725547,784

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400751
B0147051
C0232321
D0175054

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6519372857.186685%
B65202033.113497%
C6520121918.696319%
D65192844.356496%

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 7504 6519 3390 3390 45.18% 52.00%
B 7505 6520 83 83 1.11% 1.27%
C 7505 6520 914 914 12.18% 14.02%
D 7504 6519 219 219 2.92% 3.36%

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 12 115 4744471 37363.5 503 489 127.0
A 15 32 4150335 32684.1 503 489 127.0
A 7 64 697935 5493.07 503 489 127.0
B 5 185 406138 2725.12 692 666 148.8
B 4 171 62235 413.79 692 666 148.8
B 4 21 39074 258.13 692 666 148.8
C 12 254 3284587 18714.1 644 637 175.5
C 12 252 357113 2031.43 644 637 175.5
C 11 244 29491 164.43 644 637 175.5
D 11 129 743281 3914.81 675 645 189.7
D 8 240 330721 1740.0 675 645 189.7
D 14 52 169603 890.66 675 645 189.7

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