ASTROSAT CZTI

Data Quality Report

Orbit 39440

Creation date: 2024-06-27T22:04:35.432928
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/AS1A12_077T06_9000005474_39440cztM0_level2.fits modeM0/AS1A12_077T06_9000005474_39440cztM0_level2_quad_clean.evt
Size (bytes)798,629,760170,956,800
Size761.6 MB 163.0 MB
Events in quadrant A7,988,5421,146,599
Events in quadrant B5,419,8861,199,456
Events in quadrant C6,667,0091,095,837
Events in quadrant D8,652,186987,297

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308654
B0235113
C0265223
D0330833

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107844103.801929%
B107841321.224036%
C107843713.440282%
D107848938.280786%

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 13559 10786 287 287 2.12% 2.66%
B 13559 10786 69 69 0.51% 0.64%
C 13559 10786 291 291 2.15% 2.70%
D 13559 10786 767 767 5.66% 7.11%

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 15 222 2227076 9187.68 1189 1163 242.3
A 10 83 825345 3401.89 1189 1163 242.3
A 9 143 296359 1218.45 1189 1163 242.3
B 5 172 402843 1741.82 1192 1156 230.6
B 8 3 262302 1132.39 1192 1156 230.6
B 5 255 55110 233.96 1192 1156 230.6
C 15 208 960628 3586.42 1151 1158 267.5
C 15 214 438377 1634.29 1151 1158 267.5
C 14 254 389185 1450.41 1151 1158 267.5
D 12 227 2030878 7342.88 1127 1095 276.4
D 12 0 932943 3371.02 1127 1095 276.4
D 2 249 656462 2370.84 1127 1095 276.4

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