ASTROSAT CZTI

Data Quality Report

Orbit 11959

Creation date: 2024-06-27T16:20:34.409807
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_124T01_9000001766_11959cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11959cztM0_level2_quad_clean.evt
Size (bytes)491,978,880125,801,280
Size469.2 MB 120.0 MB
Events in quadrant A3,295,807845,049
Events in quadrant B4,222,647842,983
Events in quadrant C2,980,776836,073
Events in quadrant D3,924,836798,394

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146502
B0174921
C0142331
D0166811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7001430.614198%
B70013324.742180%
C7001170.242822%
D70011051.499786%

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 7437 7003 0 0 0.00% 0.00%
B 7437 7002 220 220 2.96% 3.14%
C 7437 7003 0 0 0.00% 0.00%
D 7437 7003 81 81 1.09% 1.16%

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 96186 597.79 787 769 159.6
A 1 178 49601 305.93 787 769 159.6
A 1 161 43572 268.16 787 769 159.6
B 4 239 904151 6008.08 781 761 150.4
B 15 204 140833 931.56 781 761 150.4
B 10 244 81249 535.29 781 761 150.4
C 13 61 5525 26.92 763 765 176.8
C 14 234 2491 9.76 763 765 176.8
C 1 16 2235 8.31 763 765 176.8
D 1 52 413965 2144.91 746 728 192.7
D 13 104 150791 778.9 746 728 192.7
D 13 122 149655 773.01 746 728 192.7

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