ASTROSAT CZTI

Data Quality Report

Orbit 20210721_A10_094T34_9000004574_level2

Creation date: 2021-07-22T15:13:23.128960
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/AS1A10_094T34_9000004574cztM0_level2_bc.evt modeM0/AS1A10_094T34_9000004574cztM0_level2_quad_clean.evt
Size (bytes)259,632,00097,464,960
Size247.6 MB 92.9 MB
Events in quadrant A1,037,197665,644
Events in quadrant B2,971,874646,530
Events in quadrant C1,268,513641,995
Events in quadrant D2,221,463630,492

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106980
B0178030
C0119380
D0144120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5232581.108563%
B52322875.485474%
C52323276.250000%
D52322274.338685%

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 5542 5232 0 0 0.00% 0.00%
B 5542 5232 0 0 0.00% 0.00%
C 5542 5232 0 0 0.00% 0.00%
D 5542 5233 21 21 0.38% 0.40%

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 13 254 10743 173.1 267 262 60.5
A 5 203 2001 28.72 267 262 60.5
A 0 226 1681 23.44 267 262 60.5
B 6 159 1414944 26409.16 261 254 53.6
B 12 1 437416 8160.86 261 254 53.6
B 4 80 47725 886.18 261 254 53.6
C 3 233 219360 3440.74 255 252 63.7
C 14 254 34398 536.21 255 252 63.7
C 14 176 14534 224.28 255 252 63.7
D 8 195 505452 7977.32 261 251 63.3
D 12 218 350749 5534.5 261 251 63.3
D 1 52 102364 1612.4 261 251 63.3

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