ASTROSAT CZTI

Data Quality Report

Orbit 04664

Creation date: 2024-06-27T14:45:20.059042
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_167T01_9000000584_04664cztM0_level2.evt modeM0/AS1G05_167T01_9000000584_04664cztM0_level2_quad_clean.evt
Size (bytes)718,398,72086,944,320
Size685.1 MB 82.9 MB
Events in quadrant A3,477,362547,922
Events in quadrant B3,723,399554,031
Events in quadrant C3,459,851549,710
Events in quadrant D10,585,577455,985

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156093
B0158552
C0156412
D0367422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75382172.878748%
B75382283.024675%
C75381421.883789%
D7538250133.178562%

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 7818 7540 0 0 0.00% 0.00%
B 7818 7540 1 1 0.01% 0.01%
C 7818 7540 0 0 0.00% 0.00%
D 7818 7538 2265 2265 28.97% 30.05%

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 0 149 11785 58.38 900 880 186.8
A 0 226 9674 47.08 900 880 186.8
A 12 194 8644 41.56 900 880 186.8
B 14 167 89016 502.07 909 887 175.5
B 15 204 69987 393.66 909 887 175.5
B 0 219 29237 161.51 909 887 175.5
C 9 68 11291 50.51 881 885 206.0
C 9 247 9501 41.82 881 885 206.0
C 13 61 7180 30.55 881 885 206.0
D 8 112 6742368 36434.35 768 746 185.0
D 13 235 324062 1747.33 768 746 185.0
D 13 239 316348 1705.64 768 746 185.0

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