ASTROSAT CZTI

Data Quality Report

Orbit 37113

Creation date: 2024-06-27T21:35:42.495133
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/AS1A09_138T04_9000005282_37113cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37113cztM0_level2_quad_clean.evt
Size (bytes)424,883,52063,115,200
Size405.2 MB 60.2 MB
Events in quadrant A2,763,840397,971
Events in quadrant B2,617,583402,134
Events in quadrant C3,012,094392,371
Events in quadrant D4,127,453360,780

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111092
B0108791
C0118751
D0156341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5096921.805338%
B5096601.177394%
C5096701.373626%
D50963496.848509%

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 6978 5096 30 30 0.43% 0.59%
B 6978 5095 25 25 0.36% 0.49%
C 6978 5095 92 92 1.32% 1.81%
D 6978 5095 346 346 4.96% 6.79%

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 10 83 208843 1673.66 612 601 124.4
A 15 237 176106 1410.55 612 601 124.4
A 12 189 9359 70.39 612 601 124.4
B 5 172 174154 1499.94 602 587 115.7
B 5 255 20129 168.88 602 587 115.7
B 5 200 18314 153.19 602 587 115.7
C 0 207 465158 3377.03 587 593 137.6
C 15 214 215685 1563.56 587 593 137.6
C 15 159 28409 202.2 587 593 137.6
D 1 52 592051 4197.41 583 567 140.9
D 13 249 512510 3632.96 583 567 140.9
D 13 171 338361 2397.12 583 567 140.9

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