ASTROSAT CZTI

Data Quality Report

Orbit 12779

Creation date: 2024-06-27T16:32:08.204805
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/AS1A04_110T04_9000001886_12779cztM0_level2.evt modeM0/AS1A04_110T04_9000001886_12779cztM0_level2_quad_clean.evt
Size (bytes)859,734,720211,400,640
Size819.9 MB 201.6 MB
Events in quadrant A5,977,3361,453,763
Events in quadrant B7,612,4521,412,176
Events in quadrant C5,144,2081,427,474
Events in quadrant D6,575,1221,364,400

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246203
B0294902
C0225712
D0265232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107611911.774928%
B107618818.186971%
C10761880.817768%
D107612282.118762%

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 13171 10763 77 77 0.58% 0.72%
B 13171 10763 637 637 4.84% 5.92%
C 13171 10763 26 26 0.20% 0.24%
D 13171 10763 149 149 1.13% 1.38%

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 519523 1985.25 1312 1285 261.0
A 15 222 200446 762.94 1312 1285 261.0
A 12 189 194909 741.73 1312 1285 261.0
B 4 239 2368810 10196.14 1261 1231 232.2
B 0 219 90676 385.2 1261 1231 232.2
B 3 64 71529 302.74 1261 1231 232.2
C 15 208 188533 653.89 1264 1272 286.4
C 14 234 25410 84.29 1264 1272 286.4
C 13 61 9247 27.85 1264 1272 286.4
D 1 52 1225901 4052.5 1267 1231 302.2
D 8 195 304659 1004.06 1267 1231 302.2
D 2 136 170975 561.69 1267 1231 302.2

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