ASTROSAT CZTI

Data Quality Report

Orbit 20240130_A13_017T02_9000006046_level2

Creation date: 2024-02-06T15:02:53.101634
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/AS1A13_017T02_9000006046cztM0_level2.fits modeM0/AS1A13_017T02_9000006046cztM0_level2_quad_clean.evt
Size (bytes)994,299,840935,458,560
Size948.2 MB 892.1 MB
Events in quadrant A5,140,9644,454,304
Events in quadrant B5,979,6565,768,030
Events in quadrant C6,120,4105,527,685
Events in quadrant D5,069,8524,799,267

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05415190
B02508720
C02578910
D03577500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01570
B01570
C01570
D01570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023020
B023020
C023020
D023020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1135193272628.828654%
B11352327842.452366%
C11352437163.273317%
D113524103959.156654%

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 129169 111466 0 0 0.00% 0.00%
B 129175 113513 0 0 0.00% 0.00%
C 129176 113149 0 0 0.00% 0.00%
D 129175 113396 0 0 0.00% 0.00%

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 7 110 4220 8.69 1342 1251 341.8
A 15 236 4023 8.11 1342 1251 341.8
A 0 29 3973 7.96 1342 1251 341.8
B 2 9 5622 13.23 1578 1497 311.7
B 2 8 4490 9.6 1578 1497 311.7
B 3 17 4327 9.08 1578 1497 311.7
C 3 202 4697 7.67 1618 1501 416.6
C 1 81 4692 7.66 1618 1501 416.6
C 1 80 4593 7.42 1618 1501 416.6
D 15 47 3723 5.96 1462 1329 401.7
D 10 189 3625 5.72 1462 1329 401.7
D 7 3 3615 5.69 1462 1329 401.7

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