ASTROSAT CZTI

Data Quality Report

Orbit 19480

Creation date: 2024-06-27T18:03:16.941890
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_229T02_9000002890_19480cztM0_level2.evt modeM0/AS1A05_229T02_9000002890_19480cztM0_level2_quad_clean.evt
Size (bytes)2,776,864,320430,427,520
Size2.6 GB 410.5 MB
Events in quadrant A16,477,7772,746,003
Events in quadrant B17,785,3262,777,790
Events in quadrant C19,319,4062,680,766
Events in quadrant D28,207,5272,479,079

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0709727
B0748467
C0785889
D01070667

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06940
B06940
C06940
D06940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0510
C0510
D0510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A342591610.469950%
B342594381.278496%
C342584431.293129%
D3425832029.346722%

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 39159 34262 36 36 0.09% 0.11%
B 39159 34264 145 145 0.37% 0.42%
C 39158 34261 15 15 0.04% 0.04%
D 39158 34261 2821 2821 7.20% 8.23%

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 4 2 167971 195.55 4172 4083 838.1
A 5 16 130733 151.12 4172 4083 838.1
A 11 29 59126 65.68 4172 4083 838.1
B 3 112 543180 687.22 4143 4040 784.5
B 7 220 484265 612.12 4143 4040 784.5
B 0 198 113779 139.88 4143 4040 784.5
C 9 221 1850127 1981.24 4020 4052 931.8
C 3 233 1151304 1231.25 4020 4052 931.8
C 14 238 623495 664.8 4020 4052 931.8
D 7 238 5806975 6096.4 3912 3802 951.9
D 1 52 3851724 4042.35 3912 3802 951.9
D 7 223 1316539 1379.07 3912 3802 951.9

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