ASTROSAT CZTI

Data Quality Report

Orbit 38770

Creation date: 2024-06-27T21:56:12.231277
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/AS1A12_051T01_9000005394_38770cztM0_level2.fits modeM0/AS1A12_051T01_9000005394_38770cztM0_level2_quad_clean.evt
Size (bytes)357,134,400105,808,320
Size340.6 MB 100.9 MB
Events in quadrant A3,185,266709,179
Events in quadrant B2,816,485729,906
Events in quadrant C3,642,962676,806
Events in quadrant D3,081,613645,456

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133623
B0127662
C0147592
D0135842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A633880.126223%
B6338100.157778%
C63382283.597349%
D6338230.362891%

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 9653 6340 4 4 0.04% 0.06%
B 9653 6340 1 1 0.01% 0.02%
C 9653 6340 202 202 2.09% 3.19%
D 9653 6340 18 18 0.19% 0.28%

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 430108 3022.77 700 687 142.1
A 13 248 40212 278.22 700 687 142.1
A 13 254 9603 62.76 700 687 142.1
B 0 230 25991 186.42 701 683 135.8
B 12 111 17676 125.17 701 683 135.8
B 11 111 16246 114.64 701 683 135.8
C 0 239 383496 2431.02 672 676 157.5
C 14 254 328403 2081.16 672 676 157.5
C 15 214 275792 1747.07 672 676 157.5
D 5 222 136635 817.55 683 664 166.3
D 2 250 135134 808.52 683 664 166.3
D 12 227 72000 428.92 683 664 166.3

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