ASTROSAT CZTI

Data Quality Report

Orbit 32401

Creation date: 2024-06-27T20:39:48.243219
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/AS1T04_059T01_9000004704_32401cztM0_level2.evt modeM0/AS1T04_059T01_9000004704_32401cztM0_level2_quad_clean.evt
Size (bytes)889,047,36083,566,080
Size847.9 MB 79.7 MB
Events in quadrant A3,621,705546,876
Events in quadrant B14,266,816398,357
Events in quadrant C3,923,965533,614
Events in quadrant D4,594,124517,037

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158222
B0476481
C0163291
D0188131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76691652.151519%
B7669457859.694875%
C76692373.090364%
D76692323.025166%

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 7899 7670 5 5 0.06% 0.07%
B 7899 7670 3303 3303 41.82% 43.06%
C 7899 7670 6 6 0.08% 0.08%
D 7899 7670 84 84 1.06% 1.10%

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 6 37220 194.41 924 904 186.8
A 13 254 15059 75.77 924 904 186.8
A 0 226 10217 49.85 924 904 186.8
B 4 80 9210824 64411.68 743 722 143.0
B 6 159 1848008 12919.16 743 722 143.0
B 10 245 184743 1286.97 743 722 143.0
C 3 233 146803 694.63 886 889 210.1
C 14 238 141638 670.04 886 889 210.1
C 0 10 77272 363.63 886 889 210.1
D 8 195 412452 1917.26 894 869 214.7
D 6 239 205355 952.55 894 869 214.7
D 12 233 179066 830.09 894 869 214.7

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