ASTROSAT CZTI

Data Quality Report

Orbit 07680

Creation date: 2024-06-27T15:22:37.769373
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_029T01_9000001058_07680cztM0_level2.evt modeM0/AS1A02_029T01_9000001058_07680cztM0_level2_quad_clean.evt
Size (bytes)1,219,944,960155,433,600
Size1.1 GB 148.2 MB
Events in quadrant A5,768,314993,822
Events in quadrant B6,424,5491,006,781
Events in quadrant C16,876,870889,121
Events in quadrant D7,025,521944,285

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257243
B0274793
C0589643
D0295093

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12622580.459515%
B126221601.267628%
C12622259820.583109%
D126221921.521154%

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 13997 12625 2 2 0.01% 0.02%
B 13997 12625 55 55 0.39% 0.44%
C 13997 12625 2169 2169 15.50% 17.18%
D 13997 12625 115 115 0.82% 0.91%

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 13 248 16243 48.89 1483 1450 302.6
A 0 226 14466 43.02 1483 1450 302.6
A 0 254 13830 40.91 1483 1450 302.6
B 4 239 269904 944.21 1494 1459 284.3
B 0 219 184707 644.54 1494 1459 284.3
B 0 214 69732 240.14 1494 1459 284.3
C 9 68 11592833 38106.22 1313 1319 304.2
C 8 208 61587 198.13 1313 1319 304.2
C 1 3 51082 163.59 1313 1319 304.2
D 2 152 424763 1200.67 1438 1391 352.6
D 2 136 300818 849.16 1438 1391 352.6
D 12 0 278741 786.55 1438 1391 352.6

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