ASTROSAT CZTI

Data Quality Report

Orbit 12841

Creation date: 2024-06-27T16:33:00.686226
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/AS1G08_071T01_9000001888_12841cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12841cztM0_level2_quad_clean.evt
Size (bytes)527,880,96092,364,480
Size503.4 MB 88.1 MB
Events in quadrant A3,207,766598,807
Events in quadrant B5,527,714556,892
Events in quadrant C3,149,995595,558
Events in quadrant D3,641,437573,431

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139473
B0210592
C0138492
D0154872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6779610.899838%
B6779100814.869450%
C6779480.708069%
D67791341.976693%

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 7635 6781 0 0 0.00% 0.00%
B 7635 6781 756 756 9.90% 11.15%
C 7635 6781 0 0 0.00% 0.00%
D 7635 6781 84 84 1.10% 1.24%

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 40706 240.38 823 805 166.0
A 0 226 7531 40.52 823 805 166.0
A 12 194 6434 33.91 823 805 166.0
B 10 245 2089003 14374.61 767 749 145.3
B 4 239 195324 1339.37 767 749 145.3
B 0 219 87300 595.78 767 749 145.3
C 3 233 18430 94.94 803 806 185.6
C 13 61 5851 27.18 803 806 185.6
C 3 202 1952 6.17 803 806 185.6
D 1 52 182283 946.79 799 776 191.7
D 13 104 159816 829.6 799 776 191.7
D 4 95 138835 720.16 799 776 191.7

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