ASTROSAT CZTI

Data Quality Report

Orbit 21655

Creation date: 2024-06-27T18:30:43.380445
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/AS1A06_002T02_9000003206_21655cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21655cztM0_level2_quad_clean.evt
Size (bytes)277,139,52047,229,120
Size264.3 MB 45.0 MB
Events in quadrant A1,789,063302,707
Events in quadrant B1,942,812308,351
Events in quadrant C1,990,699288,903
Events in quadrant D2,422,709273,049

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08156742
B08768885
C08919802
D0107951230

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122
B0133
C0133
D0133

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08212
B08210
C0806
D0799

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A363750.137476%
B3629160.440893%
C3637912.502062%
D3626942.592388%

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 6228 3678 1 1 0.02% 0.03%
B 6228 3669 10 10 0.16% 0.27%
C 6232 3679 0 0 0.00% 0.00%
D 6232 3673 65 65 1.04% 1.77%

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 15 236 18185 190.96 460 451 92.9
A 13 254 4646 45.17 460 451 92.9
A 0 226 3937 37.54 460 451 92.9
B 3 64 68028 771.53 460 448 87.6
B 0 229 23975 268.6 460 448 87.6
B 0 228 18115 201.7 460 448 87.6
C 9 54 211332 2057.56 437 439 102.5
C 14 238 68839 667.34 437 439 102.5
C 10 22 4100 35.72 437 439 102.5
D 1 52 308651 2848.58 437 424 108.2
D 1 20 262422 2421.34 437 424 108.2
D 7 238 127812 1177.3 437 424 108.2

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