ASTROSAT CZTI

Data Quality Report

Orbit 20231202_A13_074T01_9000005974_level2

Creation date: 2023-12-05T14:27:50.442409
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_074T01_9000005974cztM0_level2.fits modeM0/AS1A13_074T01_9000005974cztM0_level2_quad_clean.evt
Size (bytes)252,351,360277,041,600
Size240.7 MB 264.2 MB
Events in quadrant A1,426,1641,525,724
Events in quadrant B1,443,4661,710,874
Events in quadrant C1,479,4101,669,399
Events in quadrant D1,254,4761,448,151

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05940
B05940
C05940
D05940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01101950
B0694990
C0689060
D0853660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29617380812.857481%
B296208122.741391%
C2962012244.132343%
D2961620997.087385%

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 30086 29595 0 0 0.00% 0.00%
B 30085 29618 0 0 0.00% 0.00%
C 30085 29217 0 0 0.00% 0.00%
D 30085 29560 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 7 110 1181 8.53 372 347 97.7
A 15 236 1137 8.08 372 347 97.7
A 0 29 1136 8.07 372 347 97.7
B 2 9 1353 12.42 382 361 79.9
B 2 8 1104 9.3 382 361 79.9
B 3 17 1078 8.98 382 361 79.9
C 3 202 1158 7.79 390 361 102.4
C 3 203 1116 7.38 390 361 102.4
C 1 80 1094 7.16 390 361 102.4
D 4 16 940 6.02 361 327 101.8
D 10 189 887 5.5 361 327 101.8
D 10 113 887 5.5 361 327 101.8

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