ASTROSAT CZTI

Data Quality Report

Orbit 37359

Creation date: 2024-06-27T21:38:57.861333
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/AS1A10_094T20_9000005316_37359cztM0_level2.evt modeM0/AS1A10_094T20_9000005316_37359cztM0_level2_quad_clean.evt
Size (bytes)398,502,72075,363,840
Size380.0 MB 71.9 MB
Events in quadrant A1,995,129511,552
Events in quadrant B2,228,897526,672
Events in quadrant C2,127,407527,476
Events in quadrant D5,451,019439,686

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083802
B091901
C086311
D0189551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A392450.127421%
B3924551.401631%
C3924290.739042%
D392487922.400612%

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 5778 3925 2 2 0.03% 0.05%
B 5778 3925 30 30 0.52% 0.76%
C 5778 3925 23 23 0.40% 0.59%
D 5778 3925 803 803 13.90% 20.46%

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 10 83 175291 1915.69 453 443 91.3
A 15 223 25907 278.99 453 443 91.3
A 9 143 23701 254.82 453 443 91.3
B 0 190 119895 1396.32 453 441 85.5
B 5 172 73787 857.36 453 441 85.5
B 12 18 61015 708.06 453 441 85.5
C 15 214 163499 1545.34 454 458 105.5
C 1 23 81473 767.88 454 458 105.5
C 14 254 71076 669.33 454 458 105.5
D 12 235 2717696 26580.4 416 404 102.2
D 12 227 709382 6935.18 416 404 102.2
D 2 249 197444 1927.43 416 404 102.2

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