ASTROSAT CZTI

Data Quality Report

Orbit 19181

Creation date: 2024-06-27T17:59:50.727368
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_046T01_9000002838_19181cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19181cztM0_level2_quad_clean.evt
Size (bytes)475,839,36092,678,400
Size453.8 MB 88.4 MB
Events in quadrant A3,167,669585,268
Events in quadrant B3,361,622605,761
Events in quadrant C3,432,089588,499
Events in quadrant D3,997,259562,995

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137492
B0142592
C0143002
D0165332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6661190.285242%
B6661630.945804%
C6661741.110944%
D66612543.813241%

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 7581 6662 0 0 0.00% 0.00%
B 7581 6662 18 18 0.24% 0.27%
C 7581 6662 6 6 0.08% 0.09%
D 7581 6662 165 165 2.18% 2.48%

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 11 29 15680 90.1 814 797 165.2
A 14 235 12260 69.4 814 797 165.2
A 13 254 8081 44.1 814 797 165.2
B 3 112 46587 293.62 819 799 155.9
B 7 220 43310 272.61 819 799 155.9
B 0 189 26957 167.74 819 799 155.9
C 3 233 156076 820.37 799 805 189.3
C 14 238 121569 638.06 799 805 189.3
C 0 207 43952 227.97 799 805 189.3
D 1 52 709128 3636.02 794 774 194.8
D 11 176 264629 1354.38 794 774 194.8
D 2 234 26052 129.75 794 774 194.8

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