ASTROSAT CZTI

Data Quality Report

Orbit 23131

Creation date: 2024-06-27T18:50:17.178382
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/AS1T03_173T01_9000003416_23131cztM0_level2.evt modeM0/AS1T03_173T01_9000003416_23131cztM0_level2_quad_clean.evt
Size (bytes)529,499,520124,885,440
Size505.0 MB 119.1 MB
Events in quadrant A3,086,783860,432
Events in quadrant B4,929,952831,185
Events in quadrant C4,212,167831,806
Events in quadrant D3,388,223828,018

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131972
B0187503
C0164792
D0140532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6169510.826714%
B616886313.991569%
C61684567.392996%
D61681071.734760%

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 7539 6170 0 0 0.00% 0.00%
B 7538 6169 684 684 9.07% 11.09%
C 7538 6169 192 192 2.55% 3.11%
D 7538 6169 31 31 0.41% 0.50%

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 6 16 33907 210.92 791 778 157.1
A 13 254 9582 56.05 791 778 157.1
A 0 226 6843 38.61 791 778 157.1
B 5 31 1307354 9418.84 758 740 138.7
B 5 15 375238 2699.6 758 740 138.7
B 5 14 216020 1551.86 758 740 138.7
C 8 208 790224 4490.01 763 772 175.8
C 2 16 194911 1104.17 763 772 175.8
C 14 238 121723 687.91 763 772 175.8
D 1 52 91189 484.07 781 759 186.8
D 13 153 77534 410.97 781 759 186.8
D 7 38 75603 400.64 781 759 186.8

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