ASTROSAT CZTI

Data Quality Report

Orbit 08375

Creation date: 2024-06-27T15:31:49.195917
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/AS1G07_028T01_9000001166_08375cztM0_level2.evt modeM0/AS1G07_028T01_9000001166_08375cztM0_level2_quad_clean.evt
Size (bytes)458,593,92094,907,520
Size437.3 MB 90.5 MB
Events in quadrant A2,951,980615,870
Events in quadrant B3,823,128605,213
Events in quadrant C2,966,655620,188
Events in quadrant D3,708,870583,258

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131322
B0156613
C0132011
D0155061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6447210.325733%
B64462333.614645%
C6447200.310222%
D64471842.854041%

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 7397 6448 0 0 0.00% 0.00%
B 7397 6448 149 149 2.01% 2.31%
C 7397 6448 1 1 0.01% 0.02%
D 7397 6448 134 134 1.81% 2.08%

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 0 226 7186 40.71 767 752 158.1
A 12 194 6822 38.41 767 752 158.1
A 3 137 2994 14.19 767 752 158.1
B 10 16 580663 3931.82 763 744 147.5
B 4 81 108449 730.23 763 744 147.5
B 0 214 98221 660.89 763 744 147.5
C 1 16 36752 205.43 751 755 175.2
C 13 61 5770 28.62 751 755 175.2
C 8 208 3335 14.72 751 755 175.2
D 11 144 409254 2266.94 739 719 180.2
D 13 169 117986 650.71 739 719 180.2
D 8 195 100923 556.03 739 719 180.2

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