ASTROSAT CZTI

Data Quality Report

Orbit 07926

Creation date: 2024-06-27T15:25:35.833817
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/AS1A02_027T01_9000001084_07926cztM0_level2.evt modeM0/AS1A02_027T01_9000001084_07926cztM0_level2_quad_clean.evt
Size (bytes)690,739,200124,891,200
Size658.7 MB 119.1 MB
Events in quadrant A4,845,936755,262
Events in quadrant B5,231,487769,990
Events in quadrant C4,797,812778,100
Events in quadrant D5,326,592746,522

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216553
B0224372
C0215772
D0233302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105751251.182033%
B105751541.456265%
C105751181.115839%
D105751581.494090%

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 12250 10576 3 3 0.02% 0.03%
B 12250 10576 14 14 0.11% 0.13%
C 12250 10576 2 2 0.02% 0.02%
D 12250 10576 34 34 0.28% 0.32%

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 38115 146.62 1241 1215 251.7
A 15 234 26809 101.69 1241 1215 251.7
A 0 226 11736 41.8 1241 1215 251.7
B 4 239 106790 440.99 1252 1222 239.4
B 11 51 80226 330.02 1252 1222 239.4
B 4 173 64606 264.77 1252 1222 239.4
C 1 16 27249 91.44 1221 1226 284.6
C 13 61 9399 28.72 1221 1226 284.6
C 12 4 8722 26.34 1221 1226 284.6
D 5 233 244265 821.66 1215 1176 295.8
D 1 52 176918 594.03 1215 1176 295.8
D 13 104 136591 457.72 1215 1176 295.8

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