ASTROSAT CZTI

Data Quality Report

Orbit 10257

Creation date: 2024-06-27T15:56:57.561459
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/AS1A03_052T01_9000001480_10257cztM0_level2.evt modeM0/AS1A03_052T01_9000001480_10257cztM0_level2_quad_clean.evt
Size (bytes)475,773,12065,701,440
Size453.7 MB 62.7 MB
Events in quadrant A3,169,929386,665
Events in quadrant B3,488,809387,368
Events in quadrant C3,043,018382,441
Events in quadrant D4,247,961361,804

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01486
B01487
C01486
D01498

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014673788
B015555868
C014615842
D017940729

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6740691.023739%
B6731981.455950%
C6742420.622961%
D67861432.107280%

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 8667 6791 5 5 0.06% 0.07%
B 8667 6791 23 23 0.27% 0.34%
C 8667 6795 0 0 0.00% 0.00%
D 8667 6804 82 82 0.95% 1.21%

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 40494 240.71 807 789 164.9
A 15 174 22024 128.74 807 789 164.9
A 0 226 7341 39.72 807 789 164.9
B 0 214 91662 582.04 808 788 156.1
B 4 239 88614 562.52 808 788 156.1
B 10 247 52461 330.96 808 788 156.1
C 13 61 5772 27.5 779 782 181.4
C 12 4 2503 9.48 779 782 181.4
C 14 67 2161 7.6 779 782 181.4
D 8 195 529767 2836.97 772 750 186.5
D 1 52 291762 1560.62 772 750 186.5
D 10 172 238310 1273.97 772 750 186.5

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