ASTROSAT CZTI

Data Quality Report

Orbit 20210710_A10_058T08_9000004528_level2

Creation date: 2021-07-12T12:09:24.728751
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_058T08_9000004528cztM0_level2_bc.evt modeM0/AS1A10_058T08_9000004528cztM0_level2_quad_clean.evt
Size (bytes)1,069,741,440311,797,440
Size1020.2 MB 297.4 MB
Events in quadrant A4,812,6881,998,027
Events in quadrant B11,824,4131,977,930
Events in quadrant C5,755,6151,911,196
Events in quadrant D8,368,0121,906,284

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0492690
B0731190
C0527410
D0599340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04880
B04880
C04880
D04880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A239891270.529409%
B239894591.913377%
C239895912.463629%
D239894001.667431%

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 26014 23991 0 0 0.00% 0.00%
B 26014 23991 1 1 0.00% 0.00%
C 26014 23990 18 18 0.07% 0.08%
D 26014 23989 21 21 0.08% 0.09%

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 13 254 41699 148.81 1242 1218 272.0
A 5 16 14048 47.17 1242 1218 272.0
A 0 226 7835 24.33 1242 1218 272.0
B 6 159 6651608 28027.74 1236 1206 237.3
B 4 80 153260 640.82 1236 1206 237.3
B 10 247 104910 437.05 1236 1206 237.3
C 0 10 598838 2148.69 1178 1174 278.2
C 3 233 534127 1916.04 1178 1174 278.2
C 2 114 45412 159.04 1178 1174 278.2
D 8 195 2829921 9243.31 1204 1170 306.0
D 12 233 441839 1439.94 1204 1170 306.0
D 2 250 240235 781.17 1204 1170 306.0

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