ASTROSAT CZTI

Data Quality Report

Orbit 05277

Creation date: 2024-06-27T14:53:24.269914
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/AS1G05_240T02_9000000670_05277cztM0_level2.evt modeM0/AS1G05_240T02_9000000670_05277cztM0_level2_quad_clean.evt
Size (bytes)1,611,711,360212,016,960
Size1.5 GB 202.2 MB
Events in quadrant A9,830,6371,299,865
Events in quadrant B9,657,1291,328,742
Events in quadrant C9,171,7021,285,056
Events in quadrant D18,780,6191,111,237

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049262
B049150
C049174
D049268

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143
B0144
C0133
D0142

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0517808373
B0508618200
C0501927904
D08957820540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204604312.106549%
B204854081.991701%
C204732531.235774%
D19213326216.978088%

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 25691 22532 30 30 0.12% 0.13%
B 25690 22539 15 15 0.06% 0.07%
C 25691 22538 5 5 0.02% 0.02%
D 25691 21509 2539 2539 9.88% 11.80%

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 13 251 450617 931.41 2355 2295 481.3
A 0 50 169428 347.23 2355 2295 481.3
A 11 116 130656 266.68 2355 2295 481.3
B 15 204 118679 252.15 2387 2324 461.4
B 4 48 86602 182.64 2387 2324 461.4
B 15 54 73361 153.94 2387 2324 461.4
C 1 3 64808 116.48 2309 2318 536.5
C 12 4 38157 66.8 2309 2318 536.5
C 8 222 25021 42.32 2309 2318 536.5
D 11 145 7283699 14586.66 2021 1955 499.2
D 1 31 2708810 5422.33 2021 1955 499.2
D 2 136 792383 1583.37 2021 1955 499.2

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