ASTROSAT CZTI

Data Quality Report

Orbit 19121

Creation date: 2024-06-27T17:59:17.334496
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_046T01_9000002838_19121cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19121cztM0_level2_quad_clean.evt
Size (bytes)458,354,880108,973,440
Size437.1 MB 103.9 MB
Events in quadrant A3,210,745714,487
Events in quadrant B3,303,803746,699
Events in quadrant C3,596,883711,114
Events in quadrant D3,340,842687,495

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134962
B0136962
C0144912
D0139852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6314771.219512%
B6314691.092810%
C63142293.626861%
D6314510.807729%

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 7604 6315 11 11 0.14% 0.17%
B 7604 6315 0 0 0.00% 0.00%
C 7604 6315 50 50 0.66% 0.79%
D 7604 6315 22 22 0.29% 0.35%

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 9 143 61365 368.13 818 804 164.5
A 0 226 7180 38.76 818 804 164.5
A 3 137 5952 31.29 818 804 164.5
B 10 245 35274 218.76 832 812 157.5
B 12 111 17987 109.03 832 812 157.5
B 11 111 15614 93.96 832 812 157.5
C 3 233 339465 1819.92 798 806 186.1
C 14 238 124205 663.13 798 806 186.1
C 9 54 17213 88.17 798 806 186.1
D 1 52 99441 508.83 801 782 193.9
D 12 218 76221 389.08 801 782 193.9
D 11 176 72814 371.5 801 782 193.9

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