ASTROSAT CZTI

Data Quality Report

Orbit 51194

Creation date: 2025-03-17T12:12:16.862565
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/AS1C07_001T01_9000006454_51194cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51194cztM0_level2_quad_clean.evt
Size (bytes)691,128,00094,222,080
Size659.1 MB 89.9 MB
Events in quadrant A4,882,220629,877
Events in quadrant B5,568,395680,169
Events in quadrant C10,672,367476,980
Events in quadrant D3,920,405579,231

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192820
B0213650
C0365900
D0166840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69811321.890847%
B69813444.927661%
C6981198428.419997%
D6981941.346512%

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 6981 6981 96 96 1.38% 1.38%
B 6981 6981 203 203 2.91% 2.91%
C 6981 6981 1925 1925 27.57% 27.57%
D 6981 6981 71 71 1.02% 1.02%

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 12 3 1061726 5938.32 717 701 178.7
A 3 62 310218 1732.3 717 701 178.7
A 12 194 126997 706.85 717 701 178.7
B 10 254 1189021 7853.02 710 684 151.3
B 5 172 346217 2283.42 710 684 151.3
B 8 128 272526 1796.44 710 684 151.3
C 4 12 6619099 38221.86 632 627 173.2
C 12 247 626477 3614.3 632 627 173.2
C 13 3 253409 1459.82 632 627 173.2
D 2 216 257547 1333.5 690 668 192.6
D 10 181 158068 817.09 690 668 192.6
D 15 138 138622 716.14 690 668 192.6

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