ASTROSAT CZTI

Data Quality Report

Orbit 51209

Creation date: 2025-03-17T15:38:57.493264
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/AS1C07_001T01_9000006454_51209cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51209cztM0_level2_quad_clean.evt
Size (bytes)720,907,200103,993,920
Size687.5 MB 99.2 MB
Events in quadrant A4,444,389691,154
Events in quadrant B6,881,482721,651
Events in quadrant C8,456,115589,223
Events in quadrant D6,306,715609,980

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186180
B0257950
C0304720
D0242770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77121612.087656%
B77126688.661826%
C7713140118.164138%
D77135607.260469%

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 7712 7712 114 114 1.48% 1.48%
B 7712 7712 420 420 5.45% 5.45%
C 7713 7713 1346 1346 17.45% 17.45%
D 7713 7713 552 552 7.16% 7.16%

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 3 300143 1548.17 783 763 193.4
A 13 248 229833 1184.58 783 763 193.4
A 12 250 140506 722.65 783 763 193.4
B 10 254 1240718 7572.87 769 742 163.7
B 5 172 1168394 7131.17 769 742 163.7
B 8 128 331618 2020.75 769 742 163.7
C 4 12 3138274 15845.7 717 711 198.0
C 9 38 672249 3391.48 717 711 198.0
C 4 13 393007 1981.22 717 711 198.0
D 2 62 1091749 5190.85 739 711 210.2
D 3 12 1091358 5188.99 739 711 210.2
D 11 176 227702 1079.96 739 711 210.2

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