ASTROSAT CZTI

Data Quality Report

Orbit 35372

Creation date: 2022-04-16T10:16:59.190450
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/AS1A11_099T01_9000005068_35372cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35372cztM0_level2_quad_clean.evt
Size (bytes)775,005,12088,747,200
Size739.1 MB 84.6 MB
Events in quadrant A4,202,227538,592
Events in quadrant B7,034,819509,074
Events in quadrant C4,750,403533,103
Events in quadrant D6,890,045496,577

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182043
B0267132
C0194382
D0264852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8788140.159308%
B878897811.128812%
C8788961.092399%
D87883193.629950%

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 11775 8790 0 0 0.00% 0.00%
B 11775 8790 783 783 6.65% 8.91%
C 11775 8790 75 75 0.64% 0.85%
D 11775 8790 270 270 2.29% 3.07%

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 145610 690.76 1031 1011 209.3
A 9 143 31283 144.61 1031 1011 209.3
A 13 254 14393 63.93 1031 1011 209.3
B 4 251 2337676 12231.34 984 957 191.0
B 5 172 487774 2548.2 984 957 191.0
B 5 200 112704 584.93 984 957 191.0
C 15 214 356300 1521.72 998 1004 233.5
C 0 10 336712 1437.82 998 1004 233.5
C 3 233 68541 289.26 998 1004 233.5
D 8 195 1382744 5761.32 985 959 239.8
D 13 249 544373 2265.75 985 959 239.8
D 12 235 376606 1566.25 985 959 239.8

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