ASTROSAT CZTI

Data Quality Report

Orbit 21576

Creation date: 2024-06-27T18:29:42.825820
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_182T02_9000003202_21576cztM0_level2.evt modeM0/AS1A05_182T02_9000003202_21576cztM0_level2_quad_clean.evt
Size (bytes)472,032,000110,073,600
Size450.2 MB 105.0 MB
Events in quadrant A3,275,448710,963
Events in quadrant B3,427,264725,567
Events in quadrant C3,357,151714,006
Events in quadrant D3,756,603692,180

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144722
B0148773
C0146012
D0161112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7048500.709421%
B7047861.220377%
C70471121.589329%
D70481061.503973%

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 8748 7050 0 0 0.00% 0.00%
B 8747 7049 4 4 0.05% 0.06%
C 8747 7049 0 0 0.00% 0.00%
D 8748 7050 41 41 0.47% 0.58%

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 9760 52.41 848 829 170.4
A 0 226 7324 38.11 848 829 170.4
A 3 137 7081 36.69 848 829 170.4
B 0 230 30327 182.25 849 826 161.9
B 3 64 28795 172.79 849 826 161.9
B 0 190 20447 121.21 849 826 161.9
C 14 238 130286 668.81 826 827 193.6
C 3 233 8141 37.79 826 827 193.6
C 13 61 5770 25.54 826 827 193.6
D 1 52 290939 1458.17 831 803 199.0
D 13 153 121205 605.12 831 803 199.0
D 13 104 71515 355.38 831 803 199.0

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