ASTROSAT CZTI

Data Quality Report

Orbit 20220302_A10_094T37_9000004986_level2

Creation date: 2022-03-08T15:10:57.676525
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_094T37_9000004986cztM0_level2_bc.evt modeM0/AS1A10_094T37_9000004986cztM0_level2_quad_clean.evt
Size (bytes)235,883,52068,719,680
Size225.0 MB 65.5 MB
Events in quadrant A1,120,478445,415
Events in quadrant B1,357,453445,400
Events in quadrant C1,218,942438,984
Events in quadrant D3,098,038399,337

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104610
B0113870
C0103630
D0174570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5015210.418744%
B5015621.236291%
C5015130.259222%
D50154318.594217%

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 6327 5016 7 7 0.11% 0.14%
B 6327 5015 8 8 0.13% 0.16%
C 6327 5015 1 1 0.02% 0.02%
D 6327 5014 94 94 1.49% 1.87%

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 10 83 30445 521.9 248 243 57.9
A 15 223 28799 493.46 248 243 57.9
A 15 174 26490 453.56 248 243 57.9
B 5 172 132673 2539.62 248 243 52.1
B 5 255 89714 1715.79 248 243 52.1
B 0 190 83108 1589.11 248 243 52.1
C 15 214 203117 3436.46 242 239 59.0
C 0 10 31769 534.07 242 239 59.0
C 14 67 14689 244.76 242 239 59.0
D 8 195 885316 14060.61 232 225 62.9
D 2 250 409343 6499.27 232 225 62.9
D 1 52 293942 4666.01 232 225 62.9

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