ASTROSAT CZTI

Data Quality Report

Orbit 17790

Creation date: 2024-06-27T17:40:56.170601
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_015T01_9000002650_17790cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17790cztM0_level2_quad_clean.evt
Size (bytes)466,966,080100,241,280
Size445.3 MB 95.6 MB
Events in quadrant A3,187,927651,802
Events in quadrant B3,254,924673,327
Events in quadrant C3,234,815640,233
Events in quadrant D4,019,837613,971

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137612
B0138382
C0137472
D0163192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6548290.442883%
B6547280.427677%
C6547570.870628%
D65471372.092561%

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 7873 6549 3 3 0.04% 0.05%
B 7872 6548 0 0 0.00% 0.00%
C 7872 6548 0 0 0.00% 0.00%
D 7872 6548 124 124 1.58% 1.89%

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 15 174 80146 486.91 807 792 163.0
A 0 226 7262 39.7 807 792 163.0
A 13 210 5939 31.58 807 792 163.0
B 10 245 38220 243.14 817 799 153.9
B 12 111 17688 109.74 817 799 153.9
B 11 111 15355 94.58 817 799 153.9
C 14 238 123361 679.66 776 781 180.4
C 3 233 38167 207.29 776 781 180.4
C 5 218 30644 165.58 776 781 180.4
D 7 238 1035100 5584.03 770 753 185.2
D 10 70 38178 202.04 770 753 185.2
D 2 234 25456 133.36 770 753 185.2

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