ASTROSAT CZTI

Data Quality Report

Orbit 36437

Creation date: 2022-07-19T03:58:14.951394
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_009T01_9000005200_36437cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36437cztM0_level2_quad_clean.evt
Size (bytes)398,888,64069,232,320
Size380.4 MB 66.0 MB
Events in quadrant A2,512,904447,018
Events in quadrant B3,792,670444,218
Events in quadrant C2,797,320431,473
Events in quadrant D2,632,689418,339

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107463
B0146292
C0113822
D0113362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5073120.236546%
B50733907.687759%
C50731032.030357%
D5073581.143308%

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 7075 5074 3 3 0.04% 0.06%
B 7075 5074 258 258 3.65% 5.08%
C 7075 5074 60 60 0.85% 1.18%
D 7075 5074 44 44 0.62% 0.87%

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 10 83 187907 1598.38 583 572 117.2
A 9 143 56585 477.91 583 572 117.2
A 13 254 9272 74.23 583 572 117.2
B 5 172 1167931 10956.57 563 549 106.5
B 5 255 168328 1574.7 563 549 106.5
B 0 189 89904 838.65 563 549 106.5
C 0 10 282458 2202.83 556 560 128.0
C 15 214 219142 1708.06 556 560 128.0
C 3 233 98279 763.61 556 560 128.0
D 13 249 111146 819.32 558 543 135.0
D 12 233 80190 590.01 558 543 135.0
D 10 118 59511 436.82 558 543 135.0

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