ASTROSAT CZTI

Data Quality Report

Orbit 19539

Creation date: 2024-06-27T18:04:08.117031
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_142T01_9000002904_19539cztM0_level2.evt modeM0/AS1A05_142T01_9000002904_19539cztM0_level2_quad_clean.evt
Size (bytes)419,806,08083,105,280
Size400.4 MB 79.3 MB
Events in quadrant A2,980,485539,639
Events in quadrant B3,165,205543,752
Events in quadrant C3,225,892510,793
Events in quadrant D2,941,597510,605

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122521
B0128121
C0131201
D0124311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5893360.610894%
B58941051.781473%
C5894741.255514%
D5894370.627757%

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 7153 5893 0 0 0.00% 0.00%
B 7154 5895 40 40 0.56% 0.68%
C 7154 5895 9 9 0.13% 0.15%
D 7154 5895 10 10 0.14% 0.17%

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 0 226 6778 38.93 774 761 154.6
A 13 254 6367 36.27 774 761 154.6
A 3 137 5827 32.78 774 761 154.6
B 7 220 140735 971.28 759 743 144.1
B 0 244 21165 141.69 759 743 144.1
B 12 111 16689 110.63 759 743 144.1
C 3 233 154371 917.49 722 730 167.5
C 5 112 127638 757.85 722 730 167.5
C 14 238 115465 685.16 722 730 167.5
D 1 52 56715 314.7 743 725 177.9
D 12 218 32490 178.54 743 725 177.9
D 2 234 21614 117.41 743 725 177.9

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