ASTROSAT CZTI

Data Quality Report

Orbit 47302

Creation date: 2024-06-27T23:33:56.237048
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/AS1A13_025T01_9000006312_47302cztM0_level2.fits modeM0/AS1A13_025T01_9000006312_47302cztM0_level2_quad_clean.evt
Size (bytes)257,734,08060,229,440
Size245.8 MB 57.4 MB
Events in quadrant A4,147,248377,071
Events in quadrant B1,847,468426,021
Events in quadrant C1,544,898401,175
Events in quadrant D1,720,276365,337

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148671
B080341
C073271
D078431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A35913038.437761%
B3591310.863269%
C359120.055695%
D3591220.612643%

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 3591 3591 207 207 5.76% 5.76%
B 3591 3591 19 19 0.53% 0.53%
C 3591 3591 0 0 0.00% 0.00%
D 3591 3591 18 18 0.50% 0.50%

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 1928129 24203.12 376 368 79.6
A 15 235 415478 5211.72 376 368 79.6
A 9 191 316402 3967.82 376 368 79.6
B 0 200 103770 1334.19 397 386 77.5
B 0 190 57442 736.32 397 386 77.5
B 15 201 45284 579.42 397 386 77.5
C 3 233 16470 174.51 389 392 92.1
C 14 254 8071 83.35 389 392 92.1
C 0 207 4033 39.52 389 392 92.1
D 2 249 149945 1548.04 382 370 96.6
D 8 176 54644 561.71 382 370 96.6
D 12 2 18000 182.46 382 370 96.6

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