ASTROSAT CZTI

Data Quality Report

Orbit 08248

Creation date: 2024-06-27T15:29:57.070252
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/AS1G07_086T01_9000001142_08248cztM0_level2.evt modeM0/AS1G07_086T01_9000001142_08248cztM0_level2_quad_clean.evt
Size (bytes)457,971,84068,757,120
Size436.8 MB 65.6 MB
Events in quadrant A3,179,498407,761
Events in quadrant B3,396,180414,739
Events in quadrant C3,151,719410,160
Events in quadrant D3,700,856396,036

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136025
B0140169
C01367710
D01555445

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6499811.246346%
B64971031.585347%
C6496731.123768%
D64922814.328404%

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 8820 6502 0 0 0.00% 0.00%
B 8820 6502 5 5 0.06% 0.08%
C 8820 6501 0 0 0.00% 0.00%
D 8820 6499 195 195 2.21% 3.00%

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 8 15 13950 79.82 821 802 164.7
A 0 226 7710 41.94 821 802 164.7
A 12 194 7464 40.45 821 802 164.7
B 11 51 74104 469.52 830 811 156.1
B 0 214 71357 451.92 830 811 156.1
B 10 16 29234 182.08 830 811 156.1
C 13 61 6141 28.68 807 812 185.8
C 3 202 2101 6.94 807 812 185.8
C 5 128 1901 5.86 807 812 185.8
D 13 105 420219 2003.12 788 768 209.4
D 1 52 175913 836.42 788 768 209.4
D 2 152 95412 451.98 788 768 209.4

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