ASTROSAT CZTI

Data Quality Report

Orbit 56926

Creation date: 2026-04-06T11:04:04.053142
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_083T14_9000006564_56926cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56926cztM0_level2_quad_clean.evt
Size (bytes)865,437,12060,782,400
Size825.3 MB 58.0 MB
Events in quadrant A7,428,655364,853
Events in quadrant B6,313,091504,274
Events in quadrant C3,188,396540,974
Events in quadrant D14,640,21511,437

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266001
B0230631
C0139691
D0475241

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5993218836.509261%
B5994129221.554888%
C59941813.019686%
D5994591198.615282%

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 7042 5992 2050 2050 29.11% 34.21%
B 7044 5994 964 964 13.69% 16.08%
C 7044 5995 135 135 1.92% 2.25%
D 7043 5993 5575 5575 79.16% 93.03%

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 5326144 41625.28 513 499 127.9
A 4 249 26524 203.41 513 499 127.9
A 8 249 21174 161.6 513 499 127.9
B 5 185 2707445 22420.66 564 541 120.7
B 5 172 706482 5847.15 564 541 120.7
B 10 16 389039 3217.84 564 541 120.7
C 13 3 647027 3879.36 615 607 166.6
C 14 254 76497 455.44 615 607 166.6
C 11 244 15045 86.65 615 607 166.6
D 12 33 11340869 173481.38 222 211 65.4
D 2 249 769835 11773.16 222 211 65.4
D 8 160 682621 10439.03 222 211 65.4

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