ASTROSAT CZTI

Data Quality Report

Orbit 13281

Creation date: 2024-06-27T16:38:39.522730
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/AS1A04_167T02_9000001974_13281cztM0_level2.evt modeM0/AS1A04_167T02_9000001974_13281cztM0_level2_quad_clean.evt
Size (bytes)874,008,000106,283,520
Size833.5 MB 101.4 MB
Events in quadrant A4,682,148650,121
Events in quadrant B7,419,230606,526
Events in quadrant C4,454,088671,916
Events in quadrant D9,247,568606,766

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203462
B0283332
C0201152
D0342082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A98421751.778094%
B9842175317.811420%
C9842920.934769%
D984299910.150376%

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 10498 9845 6 6 0.06% 0.06%
B 10497 9844 708 708 6.74% 7.19%
C 10498 9845 1 1 0.01% 0.01%
D 10498 9845 739 739 7.04% 7.51%

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 1 162 64553 267.68 1160 1133 236.9
A 8 15 56663 234.38 1160 1133 236.9
A 15 69 31793 129.41 1160 1133 236.9
B 4 239 2855377 14588.71 1013 984 195.7
B 3 64 213917 1088.29 1013 984 195.7
B 10 245 145028 736.2 1013 984 195.7
C 14 234 18840 67.52 1132 1135 262.2
C 15 208 17712 63.22 1132 1135 262.2
C 13 61 8015 26.24 1132 1135 262.2
D 13 249 2435863 9304.85 1087 1056 261.7
D 1 52 2289260 8744.59 1087 1056 261.7
D 8 195 354345 1350.13 1087 1056 261.7

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