ASTROSAT CZTI

Data Quality Report

Orbit 24798

Creation date: 2024-06-27T19:10:00.007709
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/AS1T03_197T01_9000003626_24798cztM0_level2.evt modeM0/AS1T03_197T01_9000003626_24798cztM0_level2_quad_clean.evt
Size (bytes)485,291,52077,414,400
Size462.8 MB 73.8 MB
Events in quadrant A3,527,121469,966
Events in quadrant B3,631,181472,587
Events in quadrant C3,561,634456,244
Events in quadrant D3,496,087452,275

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147322
B0149652
C0148552
D0149542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70771492.105412%
B70771752.472799%
C70771622.289106%
D70771401.978239%

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 7797 7078 0 0 0.00% 0.00%
B 7797 7078 1 1 0.01% 0.01%
C 7797 7078 5 5 0.06% 0.07%
D 7797 7078 24 24 0.31% 0.34%

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 2 79 14603 74.69 909 891 183.6
A 13 254 11152 55.89 909 891 183.6
A 3 137 8527 41.6 909 891 183.6
B 0 189 72408 412.23 892 868 173.5
B 7 202 21724 120.18 892 868 173.5
B 12 111 20939 115.65 892 868 173.5
C 14 238 137997 681.93 859 862 201.1
C 5 112 48549 237.13 859 862 201.1
C 7 247 20147 95.9 859 862 201.1
D 1 52 114487 531.78 878 853 213.7
D 8 195 45340 208.19 878 853 213.7
D 2 234 27661 125.45 878 853 213.7

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