ASTROSAT CZTI

Data Quality Report

Orbit 08888

Creation date: 2024-06-27T15:38:36.740961
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/AS1A03_092T01_9000001240_08888cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08888cztM0_level2_quad_clean.evt
Size (bytes)474,929,280109,681,920
Size452.9 MB 104.6 MB
Events in quadrant A3,363,973733,236
Events in quadrant B3,307,591736,759
Events in quadrant C2,976,011711,587
Events in quadrant D4,298,826691,582

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139852
B0138981
C0132481
D0167711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64341241.927261%
B64341131.756295%
C6434661.025800%
D64341932.999689%

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 7634 6435 21 21 0.28% 0.33%
B 7634 6435 3 3 0.04% 0.05%
C 7634 6435 0 0 0.00% 0.00%
D 7634 6435 79 79 1.03% 1.23%

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 0 128 92028 552.76 806 791 165.1
A 8 5 91479 549.43 806 791 165.1
A 15 174 57334 342.57 806 791 165.1
B 0 214 73279 482.27 796 779 150.3
B 10 16 30501 197.71 796 779 150.3
B 3 220 23910 153.87 796 779 150.3
C 13 61 5812 29.09 760 764 173.5
C 8 128 4778 23.13 760 764 173.5
C 8 112 2969 12.71 760 764 173.5
D 1 52 538203 2793.77 763 744 192.4
D 8 195 379131 1966.9 763 744 192.4
D 12 233 200315 1037.39 763 744 192.4

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