ASTROSAT CZTI

Data Quality Report

Orbit 37656

Creation date: 2024-06-27T21:42:44.036797
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/AS1A11_075T01_9000005342_37656cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37656cztM0_level2_quad_clean.evt
Size (bytes)579,841,92084,378,240
Size553.0 MB 80.5 MB
Events in quadrant A5,005,724522,675
Events in quadrant B3,220,524548,527
Events in quadrant C3,179,802550,245
Events in quadrant D5,720,565486,386

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191753
B0138502
C0134102
D0215112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64081712.668539%
B6408530.827091%
C6408120.187266%
D640876511.938202%

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 9185 6410 146 146 1.59% 2.28%
B 9185 6408 22 22 0.24% 0.34%
C 9185 6408 9 9 0.10% 0.14%
D 9185 6408 652 652 7.10% 10.17%

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 15 222 1599653 11019.65 723 708 145.1
A 10 83 344292 2367.92 723 708 145.1
A 9 143 187247 1285.59 723 708 145.1
B 5 172 105021 743.81 729 709 140.2
B 5 255 73304 517.65 729 709 140.2
B 15 85 48930 343.85 729 709 140.2
C 15 214 292995 1760.03 716 721 166.1
C 0 10 39049 230.81 716 721 166.1
C 14 254 37319 220.39 716 721 166.1
D 12 227 2155338 13100.65 679 660 164.5
D 13 249 389433 2363.78 679 660 164.5
D 2 120 182841 1107.68 679 660 164.5

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