ASTROSAT CZTI

Data Quality Report

Orbit 28705

Creation date: 2024-06-27T19:55:11.044239
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/AS1A10_021T08_9000004118_28705cztM0_level2.evt modeM0/AS1A10_021T08_9000004118_28705cztM0_level2_quad_clean.evt
Size (bytes)520,292,16084,026,880
Size496.2 MB 80.1 MB
Events in quadrant A3,409,813537,343
Events in quadrant B3,654,017541,985
Events in quadrant C3,560,799519,388
Events in quadrant D4,706,036506,519

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136812
B0145632
C0141902
D0181932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6291991.573677%
B62921171.859504%
C62921742.765416%
D62922794.434202%

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 7556 6291 0 0 0.00% 0.00%
B 7557 6292 7 7 0.09% 0.11%
C 7557 6292 5 5 0.07% 0.08%
D 7557 6292 205 205 2.71% 3.26%

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 6 14908 80.6 876 861 174.3
A 13 254 12009 63.96 876 861 174.3
A 14 239 8607 44.44 876 861 174.3
B 15 33 138582 862.44 854 836 159.7
B 10 245 106810 663.51 854 836 159.7
B 4 80 29870 181.78 854 836 159.7
C 14 238 154733 800.85 834 841 192.2
C 3 233 70190 360.89 834 841 192.2
C 10 22 57620 295.48 834 841 192.2
D 1 52 990952 4950.75 843 824 200.0
D 8 195 279896 1395.39 843 824 200.0
D 7 80 117869 585.24 843 824 200.0

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