ASTROSAT CZTI

Data Quality Report

Orbit 55997

Creation date: 2026-02-06T14:39:58.527906
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_066T02_9000006546_55997cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55997cztM0_level2_quad_clean.evt
Size (bytes)744,416,640153,987,840
Size709.9 MB 146.9 MB
Events in quadrant A6,241,9921,013,292
Events in quadrant B5,981,2001,086,115
Events in quadrant C6,413,309936,010
Events in quadrant D8,085,494882,180

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262532
B0254662
C0273142
D0315272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107593062.844130%
B107602041.895911%
C107605074.711896%
D107605765.353160%

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 12939 10760 292 292 2.26% 2.71%
B 12940 10760 114 114 0.88% 1.06%
C 12940 10762 497 497 3.84% 4.62%
D 12940 10761 559 559 4.32% 5.19%

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 64 931956 3280.76 1135 1107 283.7
A 15 32 274741 964.42 1135 1107 283.7
A 0 8 214501 752.1 1135 1107 283.7
B 2 249 448584 1878.65 1125 1085 238.2
B 5 236 267976 1120.44 1125 1085 238.2
B 0 199 189478 790.9 1125 1085 238.2
C 12 254 1742785 5832.19 1086 1076 298.6
C 12 249 167038 555.73 1086 1076 298.6
C 13 3 58632 192.73 1086 1076 298.6
D 8 240 1077785 3499.57 1082 1036 307.7
D 2 249 1063532 3453.25 1082 1036 307.7
D 11 129 295096 955.73 1082 1036 307.7

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