ASTROSAT CZTI

Data Quality Report

Orbit 12906

Creation date: 2024-06-27T16:33:48.057647
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_116T01_9000001896_12906cztM0_level2.evt modeM0/AS1A04_116T01_9000001896_12906cztM0_level2_quad_clean.evt
Size (bytes)494,628,480104,996,160
Size471.7 MB 100.1 MB
Events in quadrant A3,334,531708,373
Events in quadrant B4,992,819618,046
Events in quadrant C3,042,433710,837
Events in quadrant D3,160,116680,772

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139593
B0191052
C0135052
D0140092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6611400.605052%
B6611105315.927999%
C6611260.393284%
D6611410.620178%

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 7658 6613 0 0 0.00% 0.00%
B 7658 6613 422 422 5.51% 6.38%
C 7658 6613 0 0 0.00% 0.00%
D 7658 6613 13 13 0.17% 0.20%

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 12 189 100619 623.24 792 776 160.2
A 1 162 78525 485.33 792 776 160.2
A 1 178 41218 252.45 792 776 160.2
B 4 239 2099765 15863.32 705 687 132.3
B 3 209 37499 278.2 705 687 132.3
B 0 214 29118 214.86 705 687 132.3
C 13 61 5911 28.61 779 782 179.3
C 8 222 2457 9.34 779 782 179.3
C 12 4 2438 9.24 779 782 179.3
D 2 14 90411 493.81 767 746 181.6
D 1 52 55307 300.48 767 746 181.6
D 13 104 37252 201.05 767 746 181.6

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