ASTROSAT CZTI

Data Quality Report

Orbit 20220322_A10_053T44_9000005020_level2

Creation date: 2022-03-25T14:04:04.676502
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/AS1A10_053T44_9000005020cztM0_level2_bc.evt modeM0/AS1A10_053T44_9000005020cztM0_level2_quad_clean.evt
Size (bytes)273,686,40097,372,800
Size261.0 MB 92.9 MB
Events in quadrant A1,295,019639,409
Events in quadrant B2,118,960645,960
Events in quadrant C1,613,009657,614
Events in quadrant D2,872,479613,472

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115590
B0144590
C0121510
D0170000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5613120.213789%
B56133376.003919%
C5613370.659184%
D56131813.224657%

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 7737 5614 1 1 0.01% 0.02%
B 7737 5613 177 177 2.29% 3.15%
C 7737 5613 0 0 0.00% 0.00%
D 7737 5613 12 12 0.16% 0.21%

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 47670 681.96 314 310 69.4
A 13 6 10090 140.83 314 310 69.4
A 7 16 9085 126.36 314 310 69.4
B 5 200 740374 11959.24 308 302 61.9
B 5 172 155093 2501.35 308 302 61.9
B 4 232 12135 191.21 308 302 61.9
C 15 214 217588 2921.92 318 316 74.4
C 14 67 70087 938.3 318 316 74.4
C 0 10 69849 935.09 318 316 74.4
D 8 195 1170325 15262.43 314 305 76.7
D 13 249 170096 2214.85 314 305 76.7
D 5 223 75252 977.65 314 305 76.7

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