ASTROSAT CZTI

Data Quality Report

Orbit 25672

Creation date: 2024-06-27T19:20:14.972011
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/AS1A09_016T04_9000003742_25672cztM0_level2.evt modeM0/AS1A09_016T04_9000003742_25672cztM0_level2_quad_clean.evt
Size (bytes)799,701,120136,526,400
Size762.7 MB 130.2 MB
Events in quadrant A7,249,680866,255
Events in quadrant B5,081,347887,830
Events in quadrant C4,937,762839,137
Events in quadrant D6,251,310826,170

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281550
B0214830
C0210920
D0253250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A103236276.073816%
B103231811.753366%
C103232312.237722%
D103231831.772740%

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 11368 10323 355 355 3.12% 3.44%
B 11368 10323 5 5 0.04% 0.05%
C 11368 10323 0 0 0.00% 0.00%
D 11368 10323 40 40 0.35% 0.39%

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 12 96 2230298 8806.75 1252 1224 253.1
A 8 192 197645 776.03 1252 1224 253.1
A 13 254 13751 49.49 1252 1224 253.1
B 0 245 88249 357.21 1261 1227 243.6
B 0 190 31072 122.51 1261 1227 243.6
B 12 111 30373 119.64 1261 1227 243.6
C 14 238 194060 676.4 1214 1221 285.1
C 3 233 9424 28.77 1214 1221 285.1
C 13 61 8325 24.92 1214 1221 285.1
D 8 195 1209135 4042.97 1230 1195 298.8
D 2 244 175443 583.21 1230 1195 298.8
D 13 174 129798 430.43 1230 1195 298.8

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