ASTROSAT CZTI

Data Quality Report

Orbit 20220101_T04_089T01_9000004832_level2

Creation date: 2025-12-31T03:48:09.605035
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/AS1T04_089T01_9000004832cztM0_level2.fits modeM0/AS1T04_089T01_9000004832cztM0_level2_quad_clean.evt
Size (bytes)249,396,480201,245,760
Size237.8 MB 191.9 MB
Events in quadrant A1,589,4821,190,287
Events in quadrant B1,465,1981,119,606
Events in quadrant C1,538,6981,137,439
Events in quadrant D1,315,6621,001,865

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0502010
B0614110
C0548940
D0796910

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01210
C01210
D01210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04900
B04900
C04900
D04900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23895300.125549%
B2389910624.443701%
C238962741.146635%
D238938193.427782%

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 36018 23904 0 0 0.00% 0.00%
B 36018 23869 0 0 0.00% 0.00%
C 36018 23906 0 0 0.00% 0.00%
D 36018 23847 0 0 0.00% 0.00%

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 9 19 1304 8.96 414 393 101.6
A 0 29 1289 8.82 414 393 101.6
A 7 110 1207 8.01 414 393 101.6
B 2 9 1283 11.78 388 373 77.2
B 3 80 1212 10.86 388 373 77.2
B 2 8 999 8.11 388 373 77.2
C 1 81 1298 8.83 406 386 103.3
C 3 202 1216 8.04 406 386 103.3
C 1 80 1208 7.96 406 386 103.3
D 7 3 984 6.44 377 349 98.5
D 10 189 970 6.3 377 349 98.5
D 10 113 969 6.29 377 349 98.5

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