ASTROSAT CZTI

Data Quality Report

Orbit 18979

Creation date: 2024-06-27T17:57:26.970543
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/AS1A05_166T04_9000002826_18979cztM0_level2.evt modeM0/AS1A05_166T04_9000002826_18979cztM0_level2_quad_clean.evt
Size (bytes)637,312,32089,712,000
Size607.8 MB 85.6 MB
Events in quadrant A3,595,541558,827
Events in quadrant B4,128,116568,023
Events in quadrant C3,832,201553,771
Events in quadrant D7,242,141518,489

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153262
B0168022
C0158122
D0266712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74321602.152853%
B74322323.121636%
C74322012.704521%
D74326959.351453%

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 7997 7433 0 0 0.00% 0.00%
B 7997 7433 29 29 0.36% 0.39%
C 7997 7433 7 7 0.09% 0.09%
D 7997 7433 459 459 5.74% 6.18%

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 13 254 8291 39.34 930 909 187.6
A 0 226 8089 38.26 930 909 187.6
A 3 137 7049 32.72 930 909 187.6
B 3 112 335094 1874.37 922 897 178.3
B 4 216 83998 466.08 922 897 178.3
B 7 220 49579 273.03 922 897 178.3
C 0 207 149980 711.01 894 901 209.7
C 14 238 137951 653.64 894 901 209.7
C 3 233 26782 123.44 894 901 209.7
D 7 238 2555309 11827.63 889 864 216.0
D 12 218 865508 4003.49 889 864 216.0
D 1 52 227550 1049.61 889 864 216.0

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