ASTROSAT CZTI

Data Quality Report

Orbit 31477

Creation date: 2024-06-27T20:29:01.919054
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_028T01_9000004584_31477cztM0_level2.evt modeM0/AS1T04_028T01_9000004584_31477cztM0_level2_quad_clean.evt
Size (bytes)927,763,20094,345,920
Size884.8 MB 90.0 MB
Events in quadrant A4,431,123656,165
Events in quadrant B11,909,439338,115
Events in quadrant C4,735,588632,031
Events in quadrant D6,399,693591,735

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189902
B0419672
C0198292
D0250604

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A91931301.414119%
B9193371740.432938%
C91932322.523659%
D91925846.353351%

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 10453 9193 0 0 0.00% 0.00%
B 10452 9192 1896 1896 18.14% 20.63%
C 10453 9193 6 6 0.06% 0.07%
D 10452 9192 383 383 3.66% 4.17%

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 13 254 15588 62.6 1143 1119 231.1
A 13 170 14751 58.98 1143 1119 231.1
A 3 137 12100 47.51 1143 1119 231.1
B 12 1 7012087 45227.57 791 771 155.0
B 6 159 1662294 10717.91 791 771 155.0
B 4 80 58210 370.52 791 771 155.0
C 14 238 176342 674.87 1092 1095 259.7
C 3 233 146854 561.31 1092 1095 259.7
C 0 10 116486 444.37 1092 1095 259.7
D 8 195 1236553 4757.09 1080 1050 259.7
D 12 218 689227 2649.71 1080 1050 259.7
D 12 233 113448 432.77 1080 1050 259.7

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