ASTROSAT CZTI

Data Quality Report

Orbit 28041

Creation date: 2024-06-27T19:47:24.370349
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_048T02_9000004050_28041cztM0_level2.evt modeM0/AS1A10_048T02_9000004050_28041cztM0_level2_quad_clean.evt
Size (bytes)560,044,80098,415,360
Size534.1 MB 93.9 MB
Events in quadrant A3,466,626648,885
Events in quadrant B3,508,598650,089
Events in quadrant C3,644,122617,435
Events in quadrant D5,876,200585,583

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144500
B0145560
C0150430
D0222710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68691321.921677%
B68691382.009026%
C68701642.387191%
D68705207.569141%

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 7454 6869 5 5 0.07% 0.07%
B 7454 6869 3 3 0.04% 0.04%
C 7455 6870 0 0 0.00% 0.00%
D 7455 6870 402 402 5.39% 5.85%

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 6 16 73113 409.13 876 859 176.6
A 0 13 15670 83.87 876 859 176.6
A 13 254 10590 55.1 876 859 176.6
B 10 245 49456 295.35 864 842 164.6
B 0 190 24323 142.66 864 842 164.6
B 12 111 20382 118.72 864 842 164.6
C 3 233 259783 1330.64 832 840 194.6
C 14 238 133752 683.0 832 840 194.6
C 10 22 9607 45.05 832 840 194.6
D 1 52 1509719 7805.16 823 802 193.3
D 8 195 1159278 5992.44 823 802 193.3
D 7 80 51217 260.78 823 802 193.3

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