ASTROSAT CZTI

Data Quality Report

Orbit 06508

Creation date: 2024-06-27T15:08:08.957003
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/AS1A02_175T01_9000000874_06508cztM0_level2.evt modeM0/AS1A02_175T01_9000000874_06508cztM0_level2_quad_clean.evt
Size (bytes)775,480,320137,442,240
Size739.6 MB 131.1 MB
Events in quadrant A5,390,008860,390
Events in quadrant B4,957,904879,799
Events in quadrant C4,789,043854,670
Events in quadrant D7,608,573811,049

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231403
B0224332
C0221752
D0302715

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A109251000.915332%
B10925500.457666%
C10925310.283753%
D109241841.684365%

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 12732 10928 5 5 0.04% 0.05%
B 12732 10928 8 8 0.06% 0.07%
C 12732 10928 0 0 0.00% 0.00%
D 12731 10927 135 135 1.06% 1.24%

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 8 15 496277 1961.42 1241 1215 252.4
A 15 236 100458 393.2 1241 1215 252.4
A 13 14 13289 47.83 1241 1215 252.4
B 0 219 43007 173.95 1249 1221 240.2
B 4 48 28169 112.18 1249 1221 240.2
B 12 111 26056 103.38 1249 1221 240.2
C 4 254 93500 330.56 1201 1209 279.2
C 13 61 9383 29.28 1201 1209 279.2
C 1 16 5033 13.69 1201 1209 279.2
D 2 152 2610505 9017.46 1189 1153 289.4
D 2 14 307782 1059.66 1189 1153 289.4
D 10 172 45157 152.07 1189 1153 289.4

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