ASTROSAT CZTI

Data Quality Report

Orbit 07987

Creation date: 2024-06-27T15:26:29.786121
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/AS1G06_168T20_9000001092_07987cztM0_level2.evt modeM0/AS1G06_168T20_9000001092_07987cztM0_level2_quad_clean.evt
Size (bytes)484,320,96073,644,480
Size461.9 MB 70.2 MB
Events in quadrant A3,551,977456,605
Events in quadrant B3,629,839466,340
Events in quadrant C3,338,007474,421
Events in quadrant D3,776,455449,074

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143561
B0145621
C0135821
D0150181

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5477370.675552%
B54773296.006938%
C5477651.186781%
D54771953.560343%

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 6703 5478 1 1 0.01% 0.02%
B 6703 5478 202 202 3.01% 3.69%
C 6703 5478 4 4 0.06% 0.07%
D 6703 5478 147 147 2.19% 2.68%

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 0 128 933101 6768.7 675 660 137.8
A 4 2 7768 51.6 675 660 137.8
A 0 226 6346 41.28 675 660 137.8
B 5 250 825655 6358.53 676 661 129.7
B 4 239 83011 634.7 676 661 129.7
B 0 231 47440 360.54 676 661 129.7
C 1 16 697497 4475.95 673 676 155.7
C 10 22 10771 64.84 673 676 155.7
C 13 61 5089 28.35 673 676 155.7
D 1 52 1238289 7665.96 662 644 161.4
D 13 169 31010 188.09 662 644 161.4
D 2 234 16322 97.11 662 644 161.4

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