ASTROSAT CZTI

Data Quality Report

Orbit 13451

Creation date: 2024-06-27T16:41:00.412012
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/AS1A04_103T01_9000001988_13451cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13451cztM0_level2_quad_clean.evt
Size (bytes)559,045,440108,423,360
Size533.1 MB 103.4 MB
Events in quadrant A3,987,724677,798
Events in quadrant B4,204,479694,191
Events in quadrant C3,996,523675,537
Events in quadrant D4,160,887641,570

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177112
B0182321
C0177431
D0184461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8564320.373657%
B85641021.191032%
C8564290.338627%
D8564380.443718%

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 9330 8569 0 0 0.00% 0.00%
B 9330 8568 6 6 0.06% 0.07%
C 9330 8569 5 5 0.05% 0.06%
D 9330 8569 17 17 0.18% 0.20%

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 1 162 18990 85.84 1028 1005 209.5
A 0 226 9165 38.94 1028 1005 209.5
A 12 194 7862 32.73 1028 1005 209.5
B 4 142 62180 304.5 1032 1004 200.9
B 4 173 35806 173.23 1032 1004 200.9
B 0 214 27296 130.87 1032 1004 200.9
C 3 233 47207 198.32 999 1006 233.0
C 10 9 29631 122.88 999 1006 233.0
C 14 234 9661 37.15 999 1006 233.0
D 13 249 163884 683.12 987 959 238.5
D 8 195 163780 682.68 987 959 238.5
D 2 234 36627 149.55 987 959 238.5

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