ASTROSAT CZTI

Data Quality Report

Orbit 31156

Creation date: 2024-06-27T20:24:37.636883
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/AS1C06_006T03_9000004502_31156cztM0_level2.evt modeM0/AS1C06_006T03_9000004502_31156cztM0_level2_quad_clean.evt
Size (bytes)336,018,24048,870,720
Size320.5 MB 46.6 MB
Events in quadrant A1,632,712322,321
Events in quadrant B2,735,742317,342
Events in quadrant C1,977,786310,900
Events in quadrant D3,600,771289,856

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069581
B0104682
C078781
D0131191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3368180.534442%
B3367972.880903%
C33671293.831304%
D336733710.008910%

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 3758 3368 0 0 0.00% 0.00%
B 3757 3367 5 5 0.13% 0.15%
C 3757 3367 13 13 0.35% 0.39%
D 3757 3367 205 205 5.46% 6.09%

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 13 254 6803 73.4 422 412 87.1
A 3 137 4172 43.18 422 412 87.1
A 0 226 3551 36.05 422 412 87.1
B 6 159 995007 12016.27 417 406 82.8
B 0 190 42676 510.68 417 406 82.8
B 0 229 24361 289.41 417 406 82.8
C 0 10 256428 2606.36 410 411 98.2
C 14 238 66118 668.93 410 411 98.2
C 3 233 37113 373.64 410 411 98.2
D 8 195 1093390 10251.53 395 386 106.6
D 13 174 792756 7431.82 395 386 106.6
D 2 250 66408 619.24 395 386 106.6

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