ASTROSAT CZTI

Data Quality Report

Orbit 36269

Creation date: 2022-06-14T09:39:57.823454
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/AS1A10_071T36_9000005182_36269cztM0_level2.evt modeM0/AS1A10_071T36_9000005182_36269cztM0_level2_quad_clean.evt
Size (bytes)881,841,600153,959,040
Size841.0 MB 146.8 MB
Events in quadrant A5,225,2801,004,634
Events in quadrant B6,622,589998,910
Events in quadrant C6,118,685986,725
Events in quadrant D8,013,405927,723

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222834
B0265033
C0247583
D0309763

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10761160.148685%
B107614093.800762%
C10761920.854939%
D107614344.033082%

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 13596 10763 2 2 0.01% 0.02%
B 13596 10763 275 275 2.02% 2.56%
C 13596 10763 56 56 0.41% 0.52%
D 13596 10763 422 422 3.10% 3.92%

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 302489 1190.05 1251 1224 253.2
A 12 189 31052 117.83 1251 1224 253.2
A 9 143 25285 95.05 1251 1224 253.2
B 5 172 1253373 5308.26 1221 1186 235.9
B 5 236 371119 1568.22 1221 1186 235.9
B 0 190 49616 205.3 1221 1186 235.9
C 0 10 817224 2876.19 1209 1217 283.7
C 15 214 446507 1569.52 1209 1217 283.7
C 0 207 117876 411.19 1209 1217 283.7
D 13 171 845670 2888.88 1199 1165 292.3
D 12 6 541740 1849.19 1199 1165 292.3
D 13 249 485359 1656.33 1199 1165 292.3

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