ASTROSAT CZTI

Data Quality Report

Orbit 19987

Creation date: 2024-06-27T18:09:42.510870
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_022T08_9000002980_19987cztM0_level2.evt modeM0/AS1A05_022T08_9000002980_19987cztM0_level2_quad_clean.evt
Size (bytes)341,354,88063,596,160
Size325.5 MB 60.7 MB
Events in quadrant A3,469,854404,277
Events in quadrant B2,204,355431,602
Events in quadrant C2,145,366407,741
Events in quadrant D2,252,933406,805

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114064749865664846
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129201
B089721
C088121
D091291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A389555414.223363%
B3895571.463415%
C3895761.951220%
D3895270.693196%

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 3895 3895 472 472 12.12% 12.12%
B 3895 3895 31 31 0.80% 0.80%
C 3894 3894 11 11 0.28% 0.28%
D 3895 3895 20 20 0.51% 0.51%

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 14 238 1457237 14806.07 490 480 98.4
A 13 252 82364 832.25 490 480 98.4
A 14 254 44768 450.13 490 480 98.4
B 7 220 118180 1222.69 506 494 96.3
B 4 171 40061 411.08 506 494 96.3
B 10 245 39232 402.47 506 494 96.3
C 0 207 132160 1182.53 483 488 111.3
C 14 238 77243 689.33 483 488 111.3
C 3 233 51801 460.83 483 488 111.3
D 1 52 285640 2315.43 499 483 123.2
D 7 238 45319 364.06 499 483 123.2
D 2 234 13933 109.21 499 483 123.2

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