ASTROSAT CZTI

Data Quality Report

Orbit 03318

Creation date: 2024-06-27T14:27:31.755565
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/AS1G05_241T02_9000000448_03318cztM0_level2.evt modeM0/AS1G05_241T02_9000000448_03318cztM0_level2_quad_clean.evt
Size (bytes)560,496,96085,766,400
Size534.5 MB 81.8 MB
Events in quadrant A3,546,960517,680
Events in quadrant B5,630,252516,387
Events in quadrant C3,704,333523,713
Events in quadrant D3,571,289504,498

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160725
B0218654
C0163964
D0163894

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76813654.751985%
B76815066.587684%
C76813033.944799%
D76813234.205182%

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 8541 7686 1 1 0.01% 0.01%
B 8541 7686 53 53 0.62% 0.69%
C 8541 7686 1 1 0.01% 0.01%
D 8541 7686 9 9 0.11% 0.12%

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 0 118 14869 73.13 914 887 191.2
A 0 226 10745 51.56 914 887 191.2
A 12 194 9917 47.23 914 887 191.2
B 15 204 1783361 9809.23 915 891 181.7
B 2 249 164728 901.62 915 891 181.7
B 15 85 69456 377.32 915 891 181.7
C 1 16 89123 414.48 899 901 212.9
C 1 192 41493 190.71 899 901 212.9
C 12 4 34701 158.8 899 901 212.9
D 13 223 81701 366.69 897 868 220.4
D 5 233 40762 180.98 897 868 220.4
D 13 239 24927 109.14 897 868 220.4

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