ASTROSAT CZTI

Data Quality Report

Orbit 28867

Creation date: 2024-06-27T19:57:22.930111
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_123T06_9000004138_28867cztM0_level2.evt modeM0/AS1A10_123T06_9000004138_28867cztM0_level2_quad_clean.evt
Size (bytes)797,040,00095,008,320
Size760.1 MB 90.6 MB
Events in quadrant A3,699,891601,105
Events in quadrant B3,742,125614,910
Events in quadrant C6,365,891574,844
Events in quadrant D9,816,100554,754

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158692
B0159822
C0240783
D0344552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76382192.867243%
B76382623.430217%
C76375296.926804%
D76376007.856488%

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 7853 7638 0 0 0.00% 0.00%
B 7853 7638 5 5 0.06% 0.07%
C 7852 7637 37 37 0.47% 0.48%
D 7852 7637 365 365 4.65% 4.78%

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 14 235 36459 186.19 943 923 190.9
A 1 113 16734 82.84 943 923 190.9
A 13 254 13521 66.01 943 923 190.9
B 15 201 22548 120.76 933 908 179.2
B 12 111 22364 119.74 933 908 179.2
B 11 111 20383 108.68 933 908 179.2
C 3 233 2549857 12281.36 886 888 207.5
C 4 254 200677 962.62 886 888 207.5
C 14 238 149868 717.81 886 888 207.5
D 8 195 6096696 28241.57 895 869 215.8
D 1 52 163104 751.62 895 869 215.8
D 7 80 81572 373.89 895 869 215.8

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