ASTROSAT CZTI

Data Quality Report

Orbit 48430

Creation date: 2024-09-11T09:38:32.153003
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/AS1A13_029T01_9000006426_48430cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48430cztM0_level2_quad_clean.evt
Size (bytes)502,836,480113,273,280
Size479.5 MB 108.0 MB
Events in quadrant A7,283,494741,024
Events in quadrant B3,462,136786,581
Events in quadrant C3,164,111751,288
Events in quadrant D4,160,034663,019

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266802
B0152812
C0145792
D0174632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70072703.853290%
B70071121.598402%
C7007380.542315%
D70072473.525046%

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 8062 7008 84 84 1.04% 1.20%
B 8062 7008 30 30 0.37% 0.43%
C 8062 7008 3 3 0.04% 0.04%
D 8062 7008 145 145 1.80% 2.07%

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 10 83 4240302 26438.99 763 749 160.4
A 13 248 81891 506.02 763 749 160.4
A 13 254 13070 76.84 763 749 160.4
B 12 16 221744 1454.94 769 744 151.9
B 8 234 90910 593.6 769 744 151.9
B 5 255 84670 552.52 769 744 151.9
C 12 2 126499 692.98 766 774 181.4
C 12 250 24295 129.65 766 774 181.4
C 15 208 14575 76.07 766 774 181.4
D 2 165 536636 2810.87 753 730 190.7
D 5 222 449795 2355.38 753 730 190.7
D 12 2 92293 480.26 753 730 190.7

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