ASTROSAT CZTI

Data Quality Report

Orbit 02485

Creation date: 2024-06-27T14:18:29.755858
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/AS1T01_046T01_9000000372_02485cztM0_level2.fits modeM0/AS1T01_046T01_9000000372_02485cztM0_level2_quad_clean.evt
Size (bytes)518,906,880153,918,720
Size494.9 MB 146.8 MB
Events in quadrant A4,167,5961,024,414
Events in quadrant B4,274,0851,060,466
Events in quadrant C4,597,823988,570
Events in quadrant D5,419,853918,539

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195633
B0197152
C0208884
D0234082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9632310.321844%
B9632600.622924%
C96312292.377739%
D96322502.595515%

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 11482 9634 0 0 0.00% 0.00%
B 11482 9634 2 2 0.02% 0.02%
C 11482 9634 176 176 1.53% 1.83%
D 11482 9634 205 205 1.79% 2.13%

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 14 63 17166 73.28 1073 1046 220.0
A 8 15 13212 55.31 1073 1046 220.0
A 12 194 11763 48.72 1073 1046 220.0
B 4 200 34114 158.07 1093 1065 209.1
B 12 111 15481 68.95 1093 1065 209.1
B 11 111 13192 58.0 1093 1065 209.1
C 2 53 459781 1910.28 1033 1040 240.1
C 10 65 61785 252.95 1033 1040 240.1
C 8 112 15087 58.49 1033 1040 240.1
D 2 184 1186397 4876.51 1020 994 243.1
D 7 67 253215 1037.59 1020 994 243.1
D 9 64 31986 127.49 1020 994 243.1

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