ASTROSAT CZTI

Data Quality Report

Orbit 48123

Creation date: 2024-08-21T18:52:21.394581
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/AS1T05_223T01_9000006402_48123cztM0_level2.fits modeM0/AS1T05_223T01_9000006402_48123cztM0_level2_quad_clean.evt
Size (bytes)820,581,120154,797,120
Size782.6 MB 147.6 MB
Events in quadrant A13,118,7661,282,238
Events in quadrant B2,172,902305
Events in quadrant C5,432,7011,322,398
Events in quadrant D8,653,9401,204,579

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0489414
B0134483
C0258383
D0341927

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126875454.295736%
B126881268599.976356%
C126881301.024590%
D126872942.317333%

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 14308 12688 56 56 0.39% 0.44%
B 14307 12687 1 1 0.01% 0.01%
C 14308 12688 1 1 0.01% 0.01%
D 14308 12688 225 225 1.57% 1.77%

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 7589622 26668.27 1370 1339 284.5
A 13 248 201723 704.23 1370 1339 284.5
A 13 254 24570 81.64 1370 1339 284.5
B 2 177 1751565 87850.06 89 86 19.9
B 4 171 25788 1289.15 89 86 19.9
B 4 21 24500 1224.55 89 86 19.9
C 12 2 42417 128.04 1370 1372 320.6
C 14 254 21103 61.55 1370 1372 320.6
C 12 250 8993 23.77 1370 1372 320.6
D 7 67 2382357 6934.36 1369 1320 343.4
D 2 165 332526 964.58 1369 1320 343.4
D 12 233 116547 335.58 1369 1320 343.4

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