ASTROSAT CZTI

Data Quality Report

Orbit 00949

Creation date: 2024-06-27T14:05:11.349099
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/AS1P01_998T01_9000000188_00949cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00949cztM0_level2_quad_clean.evt
Size (bytes)1,096,773,120100,532,160
Size1.0 GB 95.9 MB
Events in quadrant A7,976,476654,048
Events in quadrant B8,689,509653,657
Events in quadrant C8,070,162639,911
Events in quadrant D8,030,980624,962

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284530
B0306850
C0288140
D0286680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A677190.132920%
B6771100.147689%
C677140.059075%
D6772590.871234%

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 7501 6772 145 145 1.93% 2.14%
B 7501 6772 217 217 2.89% 3.20%
C 7501 6772 129 129 1.72% 1.90%
D 7502 6773 345 345 4.60% 5.09%

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 11 79 7728 11.27 2077 2092 499.9
A 3 111 6632 9.08 2077 2092 499.9
A 0 253 5761 7.34 2077 2092 499.9
B 8 234 206982 397.24 2175 2184 515.6
B 12 52 70929 133.34 2175 2184 515.6
B 4 232 41401 76.07 2175 2184 515.6
C 15 241 323674 597.33 1927 1989 538.5
C 10 34 182259 334.74 1927 1989 538.5
C 3 111 25513 43.68 1927 1989 538.5
D 12 22 685183 1181.67 1866 1936 578.2
D 1 4 189744 324.81 1866 1936 578.2
D 11 131 73612 123.96 1866 1936 578.2

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