ASTROSAT CZTI

Data Quality Report

Orbit 21292

Creation date: 2024-06-27T18:26:00.796512
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/AS1T03_140T01_9000003142_21292cztM0_level2.evt modeM0/AS1T03_140T01_9000003142_21292cztM0_level2_quad_clean.evt
Size (bytes)446,592,96086,304,960
Size425.9 MB 82.3 MB
Events in quadrant A2,815,792586,636
Events in quadrant B3,038,761578,212
Events in quadrant C2,704,080556,677
Events in quadrant D4,601,645516,371

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011878135
B012600151
C011525153
D017497184

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53671061.975033%
B53631923.580086%
C53561282.389843%
D53604879.085821%

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 6731 5391 6 6 0.09% 0.11%
B 6724 5386 78 78 1.16% 1.45%
C 6742 5387 0 0 0.00% 0.00%
D 6738 5384 426 426 6.32% 7.91%

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 5 16 25974 176.92 711 700 142.9
A 9 143 24239 164.77 711 700 142.9
A 15 236 20405 137.93 711 700 142.9
B 3 64 155966 1182.84 692 676 131.3
B 0 189 118362 896.41 692 676 131.3
B 0 229 25069 185.8 692 676 131.3
C 14 238 107382 697.89 663 667 152.9
C 3 233 11344 69.83 663 667 152.9
C 13 61 4699 26.37 663 667 152.9
D 7 38 1632851 10173.5 661 642 160.4
D 12 235 177292 1101.05 661 642 160.4
D 1 52 134615 835.05 661 642 160.4

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