ASTROSAT CZTI

Data Quality Report

Orbit 15676

Creation date: 2024-06-27T17:11:58.571687
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/AS1T02_084T01_9000002318_15676cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15676cztM0_level2_quad_clean.evt
Size (bytes)475,156,80069,091,200
Size453.1 MB 65.9 MB
Events in quadrant A3,265,973417,750
Events in quadrant B3,391,764422,815
Events in quadrant C3,347,059413,038
Events in quadrant D3,961,682403,074

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132823
B0136832
C0135642
D0154792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6240641.025641%
B62401191.907051%
C62401672.676282%
D62404256.810897%

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 7591 6242 8 8 0.11% 0.13%
B 7591 6242 18 18 0.24% 0.29%
C 7591 6242 0 0 0.00% 0.00%
D 7591 6242 267 267 3.52% 4.28%

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 13 248 47147 277.79 833 816 166.8
A 15 69 13810 77.91 833 816 166.8
A 0 226 7512 40.15 833 816 166.8
B 4 173 75359 487.27 829 811 153.0
B 0 189 32127 204.69 829 811 153.0
B 0 214 19252 120.54 829 811 153.0
C 14 238 139626 752.45 808 814 184.5
C 3 233 39950 212.14 808 814 184.5
C 14 234 7771 37.71 808 814 184.5
D 1 52 887643 4713.6 784 764 188.2
D 10 70 58659 307.7 784 764 188.2
D 2 234 21065 107.9 784 764 188.2

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