ASTROSAT CZTI

Data Quality Report

Orbit 50680

Creation date: 2025-02-09T23:53:23.280997
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/AS1T05_241T01_9000006446_50680cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50680cztM0_level2_quad_clean.evt
Size (bytes)455,636,16091,054,080
Size434.5 MB 86.8 MB
Events in quadrant A3,798,378581,386
Events in quadrant B3,433,802654,556
Events in quadrant C5,039,788552,022
Events in quadrant D4,111,048535,026

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153411
B0145241
C0191761
D0165011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62212624.211542%
B6221701.125221%
C62214306.912072%
D62221943.117968%

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 7281 6221 226 226 3.10% 3.63%
B 7281 6221 24 24 0.33% 0.39%
C 7281 6221 381 381 5.23% 6.12%
D 7282 6222 148 148 2.03% 2.38%

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 3 46 245165 1525.02 651 635 160.3
A 8 38 229042 1424.47 651 635 160.3
A 4 3 195534 1215.49 651 635 160.3
B 0 229 290755 2068.27 660 637 140.3
B 4 170 156959 1114.43 660 637 140.3
B 3 249 96371 682.49 660 637 140.3
C 13 113 535296 3083.81 637 633 173.4
C 12 252 383223 2206.69 637 633 173.4
C 1 44 270719 1557.79 637 633 173.4
D 7 96 476042 2668.19 641 619 178.2
D 2 249 247318 1384.53 641 619 178.2
D 1 47 204472 1144.07 641 619 178.2

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