ASTROSAT CZTI

Data Quality Report

Orbit 25546

Creation date: 2024-06-27T19:18:52.371102
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/AS1A09_008T05_9000003724_25546cztM0_level2.evt modeM0/AS1A09_008T05_9000003724_25546cztM0_level2_quad_clean.evt
Size (bytes)504,803,52092,393,280
Size481.4 MB 88.1 MB
Events in quadrant A3,298,250606,061
Events in quadrant B3,224,980625,954
Events in quadrant C3,431,028576,128
Events in quadrant D4,909,789553,306

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135830
B0132800
C0138900
D0191910

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6252651.039667%
B6252260.415867%
C6252831.327575%
D62511241.983683%

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 7507 6253 17 17 0.23% 0.27%
B 7507 6253 0 0 0.00% 0.00%
C 7507 6253 20 20 0.27% 0.32%
D 7506 6252 79 79 1.05% 1.26%

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 6 16 137205 827.62 820 804 164.8
A 13 254 9211 51.01 820 804 164.8
A 3 137 7234 39.01 820 804 164.8
B 12 111 18405 114.03 823 805 154.3
B 11 111 16806 103.67 823 805 154.3
B 14 111 15712 96.58 823 805 154.3
C 2 16 240531 1311.61 782 788 182.8
C 14 238 127397 692.67 782 788 182.8
C 3 233 10067 50.76 782 788 182.8
D 1 52 977131 4755.0 770 755 205.3
D 8 195 965420 4697.97 770 755 205.3
D 2 234 25534 120.67 770 755 205.3

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