ASTROSAT CZTI

Data Quality Report

Orbit 17507

Creation date: 2024-06-27T17:37:24.551400
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/AS1T03_068T01_9000002594_17507cztM0_level2.evt modeM0/AS1T03_068T01_9000002594_17507cztM0_level2_quad_clean.evt
Size (bytes)746,660,160153,699,840
Size712.1 MB 146.6 MB
Events in quadrant A5,298,872981,443
Events in quadrant B5,274,268989,137
Events in quadrant C5,405,805949,342
Events in quadrant D5,856,541942,312

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236622
B0233662
C0234532
D0256882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11459680.593420%
B11460760.663176%
C11460830.724258%
D114601841.605585%

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 11974 11460 23 23 0.19% 0.20%
B 11975 11461 3 3 0.03% 0.03%
C 11975 11461 2 2 0.02% 0.02%
D 11975 11461 136 136 1.14% 1.19%

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 15 174 110595 405.37 1335 1308 269.6
A 13 210 37805 135.38 1335 1308 269.6
A 0 226 11650 38.36 1335 1308 269.6
B 12 111 30666 115.65 1330 1294 254.0
B 11 111 26405 98.88 1330 1294 254.0
B 0 219 23912 89.06 1330 1294 254.0
C 14 238 195928 652.16 1283 1290 298.5
C 3 233 94573 312.55 1283 1290 298.5
C 5 218 61555 201.92 1283 1290 298.5
D 13 232 414420 1319.31 1298 1258 313.2
D 13 189 239595 761.06 1298 1258 313.2
D 11 176 150073 475.2 1298 1258 313.2

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