ASTROSAT CZTI

Data Quality Report

Orbit 23439

Creation date: 2024-06-27T18:54:49.245654
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/AS1A07_127T01_9000003468_23439cztM0_level2.evt modeM0/AS1A07_127T01_9000003468_23439cztM0_level2_quad_clean.evt
Size (bytes)696,205,44080,907,840
Size664.0 MB 77.2 MB
Events in quadrant A3,461,757505,330
Events in quadrant B3,534,730509,636
Events in quadrant C5,755,552483,586
Events in quadrant D7,851,391456,163

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147961
B0148591
C0217002
D0282771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7109771.083134%
B71091071.505134%
C710895113.379291%
D7108160322.552054%

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 7309 7110 2 2 0.03% 0.03%
B 7309 7110 9 9 0.12% 0.13%
C 7308 7109 530 530 7.25% 7.46%
D 7308 7108 1390 1390 19.02% 19.56%

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 15 174 35068 189.84 887 868 180.2
A 13 254 11724 60.26 887 868 180.2
A 3 137 7881 38.93 887 868 180.2
B 0 189 48199 282.01 879 858 167.9
B 0 228 27130 156.5 879 858 167.9
B 12 111 20558 117.35 879 858 167.9
C 10 9 2374009 12226.91 828 834 194.1
C 14 238 128941 660.02 828 834 194.1
C 7 247 11122 53.01 828 834 194.1
D 1 52 4167687 21504.91 786 764 193.8
D 13 172 479072 2468.48 786 764 193.8
D 12 233 84370 431.48 786 764 193.8

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