ASTROSAT CZTI

Data Quality Report

Orbit 26002

Creation date: 2024-06-27T19:23:44.260525
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/AS1A07_068T01_9000003760_26002cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_26002cztM0_level2_quad_clean.evt
Size (bytes)591,779,520107,017,920
Size564.4 MB 102.1 MB
Events in quadrant A3,595,184711,028
Events in quadrant B3,672,455708,193
Events in quadrant C3,596,774673,120
Events in quadrant D6,550,518628,025

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155100
B0157380
C0156070
D0244300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7477530.708840%
B7477921.230440%
C7477981.310686%
D747686511.570358%

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 7827 7478 0 0 0.00% 0.00%
B 7827 7478 7 7 0.09% 0.09%
C 7827 7478 0 0 0.00% 0.00%
D 7826 7477 714 714 9.12% 9.55%

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 13 78305 420.19 912 892 184.2
A 13 254 11491 57.53 912 892 184.2
A 3 137 8694 42.35 912 892 184.2
B 10 245 102774 587.37 898 876 173.5
B 0 190 42903 242.26 898 876 173.5
B 12 111 21121 116.7 898 876 173.5
C 14 238 138587 682.53 858 863 201.8
C 0 207 60745 296.76 858 863 201.8
C 3 233 55241 269.49 858 863 201.8
D 1 52 3179955 15660.18 836 814 203.0
D 1 3 77151 376.03 836 814 203.0
D 7 80 35221 169.49 836 814 203.0

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