ASTROSAT CZTI

Data Quality Report

Orbit 55291

Creation date: 2025-12-17T11:55:43.817293
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_009T01_9000006534_55291cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55291cztM0_level2_quad_clean.evt
Size (bytes)559,572,480128,528,640
Size533.6 MB 122.6 MB
Events in quadrant A4,443,157831,155
Events in quadrant B4,322,854895,960
Events in quadrant C4,348,130809,538
Events in quadrant D6,894,945725,657

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200182
B0196832
C0197142
D0269142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A90681331.466696%
B90681571.731363%
C90681001.102779%
D90695375.921270%

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 9098 9069 53 53 0.58% 0.58%
B 9098 9070 13 13 0.14% 0.14%
C 9098 9070 46 46 0.51% 0.51%
D 9099 9071 504 504 5.54% 5.56%

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 0 8 266478 1121.95 970 943 236.7
A 7 7 86027 359.5 970 943 236.7
A 3 78 78665 328.39 970 943 236.7
B 0 199 132347 629.03 969 931 208.9
B 7 252 104463 495.56 969 931 208.9
B 2 249 96276 456.37 969 931 208.9
C 13 3 242683 925.34 960 950 261.2
C 12 252 113330 430.18 960 950 261.2
C 14 254 67765 255.76 960 950 261.2
D 6 42 1026212 3925.37 934 892 261.2
D 2 207 693553 2651.81 934 892 261.2
D 11 129 584539 2234.46 934 892 261.2

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