ASTROSAT CZTI

Data Quality Report

Orbit 20220217_A05_167T01_9000004940_level2

Creation date: 2026-01-01T04:43:11.599422
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/AS1A05_167T01_9000004940cztM0_level2.fits modeM0/AS1A05_167T01_9000004940cztM0_level2_quad_clean.evt
Size (bytes)834,972,480714,464,640
Size796.3 MB 681.4 MB
Events in quadrant A5,220,8424,153,947
Events in quadrant B4,845,2724,018,801
Events in quadrant C5,090,9644,038,370
Events in quadrant D4,203,9823,501,470

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017640
B017640
C017640
D017640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03250
B03250
C03250
D03250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820720
B02211360
C01815930
D03195690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A864255500.636390%
B8641737144.297765%
C864122740.317086%
D8640060206.967593%

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 121861 86442 0 0 0.00% 0.00%
B 121861 86406 0 0 0.00% 0.00%
C 121861 86455 0 0 0.00% 0.00%
D 121861 86389 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 4262 8.99 1362 1281 331.7
A 7 110 4229 8.89 1362 1281 331.7
A 0 29 4167 8.7 1362 1281 331.7
B 2 9 4227 12.04 1285 1231 248.9
B 3 80 3925 10.82 1285 1231 248.9
B 2 8 3443 8.89 1285 1231 248.9
C 1 80 4282 8.82 1345 1264 342.1
C 1 81 4242 8.71 1345 1264 342.1
C 3 202 4015 8.04 1345 1264 342.1
D 10 113 3097 6.22 1206 1103 320.3
D 7 3 3085 6.19 1206 1103 320.3
D 6 62 3033 6.02 1206 1103 320.3

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