ASTROSAT CZTI

Data Quality Report

Orbit 20230409_A12_042T01_9000005560_level2

Creation date: 2023-04-11T14:35:55.893890
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/AS1A12_042T01_9000005560cztM0_level2.fits modeM0/AS1A12_042T01_9000005560cztM0_level2_quad_clean.evt
Size (bytes)281,352,960390,263,040
Size268.3 MB 372.2 MB
Events in quadrant A1,740,7862,666,243
Events in quadrant B1,685,7202,723,612
Events in quadrant C1,583,9702,248,924
Events in quadrant D1,307,2581,981,043

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690080
B0697470
C01234320
D0747970

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06540
B06540
C06540
D06540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31999710.221882%
B320011910.596856%
C31999451214.100441%
D32001509915.933877%

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 51132 31999 0 0 0.00% 0.00%
B 51132 31999 0 0 0.00% 0.00%
C 51132 31957 0 0 0.00% 0.00%
D 51132 31831 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 1508 9.38 454 427 115.2
A 0 29 1455 8.92 454 427 115.2
A 7 110 1371 8.19 454 427 115.2
B 2 9 1493 12.29 446 428 86.7
B 3 80 1225 9.19 446 428 86.7
B 5 128 1193 8.83 446 428 86.7
C 1 81 1350 8.83 418 393 108.4
C 3 203 1269 8.08 418 393 108.4
C 1 80 1263 8.02 418 393 108.4
D 10 189 1071 6.44 380 345 112.7
D 6 62 1009 5.89 380 345 112.7
D 10 113 1000 5.81 380 345 112.7

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