ASTROSAT CZTI

Data Quality Report

Orbit 03294

Creation date: 2024-06-27T14:27:13.781158
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/AS1G05_228T02_9000000446_03294cztM0_level2.evt modeM0/AS1G05_228T02_9000000446_03294cztM0_level2_quad_clean.evt
Size (bytes)1,397,707,200185,826,240
Size1.3 GB 177.2 MB
Events in quadrant A8,262,1551,118,060
Events in quadrant B12,172,0621,100,874
Events in quadrant C11,949,7741,086,926
Events in quadrant D8,735,4721,085,238

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0373444
B0483493
C0480133
D0396783

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179281660.925926%
B179281961.093262%
C179287464.161089%
D179283171.768184%

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 19808 17931 36 36 0.18% 0.20%
B 19808 17931 17 17 0.09% 0.09%
C 19808 17931 530 530 2.68% 2.96%
D 19808 17931 241 241 1.22% 1.34%

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 0 118 264365 620.69 2042 1995 422.7
A 0 50 75182 173.14 2042 1995 422.7
A 0 226 48952 111.09 2042 1995 422.7
B 15 204 3720744 9253.54 2061 2010 401.9
B 3 0 139979 343.32 2061 2010 401.9
B 14 167 110901 270.96 2061 2010 401.9
C 2 53 1795175 3943.56 1944 1953 454.7
C 7 220 778758 1708.31 1944 1953 454.7
C 14 223 696874 1528.23 1944 1953 454.7
D 14 34 668573 1400.74 1963 1902 475.9
D 13 223 305871 638.67 1963 1902 475.9
D 5 233 111959 231.24 1963 1902 475.9

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