ASTROSAT CZTI

Data Quality Report

Orbit 31091

Creation date: 2024-06-27T20:23:14.661806
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/AS1A10_109T01_9000004492_31091cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31091cztM0_level2_quad_clean.evt
Size (bytes)590,754,240102,240,000
Size563.4 MB 97.5 MB
Events in quadrant A3,628,418678,246
Events in quadrant B5,383,194673,935
Events in quadrant C4,122,692654,745
Events in quadrant D4,321,773640,960

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150572
B0200532
C0165082
D0172372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64231292.008407%
B64232123.300638%
C64233645.667134%
D64231362.117391%

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 8878 6425 0 0 0.00% 0.00%
B 8878 6425 0 0 0.00% 0.00%
C 8878 6425 68 68 0.77% 1.06%
D 8878 6425 22 22 0.25% 0.34%

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 13 254 12726 64.06 941 929 184.2
A 3 137 8810 42.79 941 929 184.2
A 0 226 7815 37.39 941 929 184.2
B 6 159 1713780 9955.7 922 903 172.0
B 0 183 26455 148.51 922 903 172.0
B 12 111 20755 115.39 922 903 172.0
C 0 10 322584 1554.9 897 908 206.9
C 14 238 146224 702.42 897 908 206.9
C 10 22 121503 582.93 897 908 206.9
D 13 174 399421 1870.57 917 896 213.0
D 8 195 335887 1572.36 917 896 213.0
D 1 52 57020 263.43 917 896 213.0

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