ASTROSAT CZTI

Data Quality Report

Orbit 20986

Creation date: 2024-06-27T18:22:02.250578
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/AS1A05_072T04_9000003094_20986cztM0_level2.evt modeM0/AS1A05_072T04_9000003094_20986cztM0_level2_quad_clean.evt
Size (bytes)95,941,44025,562,880
Size91.5 MB 24.4 MB
Events in quadrant A677,147173,352
Events in quadrant B739,766178,793
Events in quadrant C694,396166,398
Events in quadrant D705,578160,203

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027491
B029401
C028001
D028751

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126650.394945%
B1266120.947867%
C1266161.263823%
D126630.236967%

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 2506 1267 0 0 0.00% 0.00%
B 2506 1267 0 0 0.00% 0.00%
C 2506 1267 0 0 0.00% 0.00%
D 2506 1267 3 3 0.12% 0.24%

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 0 226 1408 33.99 176 173 36.3
A 12 194 1279 30.44 176 173 36.3
A 3 137 1268 30.14 176 173 36.3
B 0 182 22989 643.89 179 175 35.4
B 0 230 12594 350.51 179 175 35.4
B 12 111 3780 101.75 179 175 35.4
C 14 238 27018 647.47 171 171 41.5
C 13 61 1218 25.25 171 171 41.5
C 7 247 542 8.95 171 171 41.5
D 7 223 26220 614.97 169 165 42.4
D 1 52 19650 459.9 169 165 42.4
D 13 172 16015 374.11 169 165 42.4

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