ASTROSAT CZTI

Data Quality Report

Orbit 13273

Creation date: 2024-06-27T16:38:35.733666
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_167T02_9000001974_13273cztM0_level2.evt modeM0/AS1A04_167T02_9000001974_13273cztM0_level2_quad_clean.evt
Size (bytes)521,023,680106,436,160
Size496.9 MB 101.5 MB
Events in quadrant A4,338,857683,811
Events in quadrant B3,904,149708,819
Events in quadrant C3,267,900714,848
Events in quadrant D3,836,540671,940

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172113
B0157592
C0137582
D0157602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63703195.007849%
B63702213.469388%
C6370721.130298%
D63701111.742543%

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 9146 6373 125 125 1.37% 1.96%
B 9146 6373 75 75 0.82% 1.18%
C 9146 6373 7 7 0.08% 0.11%
D 9146 6373 32 32 0.35% 0.50%

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 15 239 783284 4765.09 814 798 164.2
A 8 15 335519 2038.34 814 798 164.2
A 1 162 33405 198.57 814 798 164.2
B 4 239 487482 3139.56 831 811 155.0
B 3 64 35328 222.67 831 811 155.0
B 0 189 27412 171.61 831 811 155.0
C 15 208 35854 186.27 823 830 188.0
C 6 96 21728 111.14 823 830 188.0
C 13 61 5934 27.14 823 830 188.0
D 1 52 613721 3188.69 810 788 192.2
D 10 157 48538 248.41 810 788 192.2
D 8 195 39344 200.58 810 788 192.2

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