ASTROSAT CZTI

Data Quality Report

Orbit 34464

Creation date: 2022-02-11T18:21:16.353458
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/AS1A10_058T06_9000004920_34464cztM0_level2.evt modeM0/AS1A10_058T06_9000004920_34464cztM0_level2_quad_clean.evt
Size (bytes)1,346,313,600139,527,360
Size1.3 GB 133.1 MB
Events in quadrant A7,499,580843,403
Events in quadrant B8,045,288849,576
Events in quadrant C8,022,653834,756
Events in quadrant D16,261,617729,234

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02880
B02880
C02880
D02880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307994
B0324723
C0319473
D0580703

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A140171821.298423%
B140171731.234216%
C140171100.784761%
D14017228616.308768%

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 19486 14020 127 127 0.65% 0.91%
B 19486 14020 102 102 0.52% 0.73%
C 19486 14020 86 86 0.44% 0.61%
D 19486 14020 2143 2143 11.00% 15.29%

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 15 169 599920 1726.98 1751 1720 346.4
A 10 83 64650 181.68 1751 1720 346.4
A 13 6 61734 173.26 1751 1720 346.4
B 5 172 579194 1774.12 1732 1690 325.5
B 0 229 257588 786.13 1732 1690 325.5
B 5 31 151311 459.64 1732 1690 325.5
C 15 208 598323 1533.44 1701 1718 389.1
C 15 214 577170 1479.07 1701 1718 389.1
C 0 10 97581 246.39 1701 1718 389.1
D 7 223 4037680 10803.81 1526 1483 373.6
D 8 195 3326163 8899.27 1526 1483 373.6
D 2 250 1122521 3000.72 1526 1483 373.6

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