ASTROSAT CZTI

Data Quality Report

Orbit 56417

Creation date: 2026-03-03T05:30:13.236438
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_083T05_9000006554_56417cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56417cztM0_level2_quad_clean.evt
Size (bytes)804,712,32072,691,200
Size767.4 MB 69.3 MB
Events in quadrant A12,053,936300,663
Events in quadrant B5,746,020537,233
Events in quadrant C3,453,087554,113
Events in quadrant D8,053,985374,603

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0399111
B0213801
C0148211
D0282911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6211331753.405249%
B6211113518.274030%
C62121262.028332%
D6212176728.444945%

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 7276 6212 3054 3054 41.97% 49.16%
B 7276 6212 727 727 9.99% 11.70%
C 7277 6213 117 117 1.61% 1.88%
D 7277 6212 1638 1638 22.51% 26.37%

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 3 6055791 51913.04 462 450 116.6
A 4 95 1730887 14835.21 462 450 116.6
A 7 64 1481126 12693.98 462 450 116.6
B 4 206 2168213 17045.36 596 574 127.2
B 5 185 485651 3814.43 596 574 127.2
B 8 128 319526 2508.1 596 574 127.2
C 12 254 582374 3361.33 627 621 173.1
C 15 230 289588 1669.63 627 621 173.1
C 6 223 48954 279.27 627 621 173.1
D 8 129 3138669 21648.0 502 479 145.0
D 2 120 922239 6358.53 502 479 145.0
D 11 176 763919 5266.4 502 479 145.0

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