ASTROSAT CZTI

Data Quality Report

Orbit 44749

Creation date: 2024-06-27T23:06:03.308198
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_004T11_9000006018_44749cztM0_level2.fits modeM0/AS1A13_004T11_9000006018_44749cztM0_level2_quad_clean.evt
Size (bytes)573,782,400101,868,480
Size547.2 MB 97.1 MB
Events in quadrant A6,045,224691,695
Events in quadrant B3,609,960760,874
Events in quadrant C3,032,838735,095
Events in quadrant D8,061,880456,546

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230952
B0150352
C0133502
D0282992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63105809.191759%
B63091302.060548%
C6309350.554763%
D6309196931.209383%

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 7555 6311 402 402 5.32% 6.37%
B 7554 6310 76 76 1.01% 1.20%
C 7554 6310 21 21 0.28% 0.33%
D 7554 6310 1700 1700 22.50% 26.94%

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 10 83 1969260 13701.68 697 682 143.7
A 15 223 1223949 8514.17 697 682 143.7
A 13 248 155545 1077.88 697 682 143.7
B 5 255 307470 2181.29 723 702 140.6
B 0 189 202662 1436.05 723 702 140.6
B 0 155 63083 443.56 723 702 140.6
C 14 254 88435 516.24 723 728 169.9
C 12 2 67579 393.49 723 728 169.9
C 1 3 45079 261.05 723 728 169.9
D 8 129 4018020 28230.99 557 539 142.3
D 9 49 1031711 7246.08 557 539 142.3
D 5 222 230422 1615.4 557 539 142.3

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