ASTROSAT CZTI

Data Quality Report

Orbit 08495

Creation date: 2024-06-27T15:33:29.290120
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/AS1G07_060T01_9000001200_08495cztM0_level2.evt modeM0/AS1G07_060T01_9000001200_08495cztM0_level2_quad_clean.evt
Size (bytes)399,012,48087,451,200
Size380.5 MB 83.4 MB
Events in quadrant A2,877,824557,794
Events in quadrant B3,020,914572,741
Events in quadrant C2,831,464554,203
Events in quadrant D2,931,442530,221

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01264
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01268927
B01298032
C01266517
D01294623

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6211140.225407%
B6208160.257732%
C621670.112613%
D6213100.160953%

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 7533 6224 0 0 0.00% 0.00%
B 7533 6224 1 1 0.01% 0.02%
C 7533 6224 0 0 0.00% 0.00%
D 7533 6224 2 2 0.03% 0.03%

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 13 251 10671 65.95 743 728 150.8
A 5 16 10143 62.45 743 728 150.8
A 0 226 6939 41.2 743 728 150.8
B 0 214 75405 523.42 752 735 142.7
B 12 111 15584 104.09 752 735 142.7
B 5 255 14204 94.41 752 735 142.7
C 13 61 5587 29.02 724 729 167.4
C 12 4 3467 16.35 724 729 167.4
C 8 222 2895 12.94 724 729 167.4
D 1 52 126064 724.83 710 693 173.0
D 8 195 70341 402.67 710 693 173.0
D 2 234 18148 100.92 710 693 173.0

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