ASTROSAT CZTI

Data Quality Report

Orbit 22585

Creation date: 2024-06-27T18:43:09.387842
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/AS1C05_002T01_9000003352_22585cztM0_level2.evt modeM0/AS1C05_002T01_9000003352_22585cztM0_level2_quad_clean.evt
Size (bytes)537,600,96097,606,080
Size512.7 MB 93.1 MB
Events in quadrant A3,509,679612,666
Events in quadrant B3,636,930622,119
Events in quadrant C3,639,800603,804
Events in quadrant D4,981,786591,334

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155572
B0158682
C0157722
D0200582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7557260.344052%
B7557630.833664%
C7558911.204022%
D75581972.606510%

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 7857 7558 0 0 0.00% 0.00%
B 7857 7558 4 4 0.05% 0.05%
C 7858 7559 0 0 0.00% 0.00%
D 7858 7559 127 127 1.62% 1.68%

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 11809 59.61 906 887 183.2
A 11 47 9440 46.68 906 887 183.2
A 3 137 8129 39.53 906 887 183.2
B 15 33 60693 345.96 905 882 172.9
B 12 111 21410 118.74 905 882 172.9
B 11 111 19138 105.6 905 882 172.9
C 14 238 137443 664.25 877 883 205.6
C 10 222 62922 301.77 877 883 205.6
C 10 22 13223 60.02 877 883 205.6
D 12 227 857962 3990.18 877 851 214.8
D 1 52 671286 3121.13 877 851 214.8
D 10 199 74508 342.9 877 851 214.8

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