ASTROSAT CZTI

Data Quality Report

Orbit 08802

Creation date: 2024-06-27T15:37:26.372472
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_135T01_9000001226_08802cztM0_level2.evt modeM0/AS1A03_135T01_9000001226_08802cztM0_level2_quad_clean.evt
Size (bytes)585,990,72089,640,000
Size558.8 MB 85.5 MB
Events in quadrant A3,908,454584,534
Events in quadrant B3,372,175587,576
Events in quadrant C3,113,877573,539
Events in quadrant D6,900,099503,245

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159613
B0143702
C0138372
D0251872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66721311.963429%
B6672881.318945%
C6672340.509592%
D6672101315.182854%

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 7732 6672 58 58 0.75% 0.87%
B 7732 6672 13 13 0.17% 0.19%
C 7732 6672 0 0 0.00% 0.00%
D 7732 6672 1006 1006 13.01% 15.08%

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 8 5 651756 3873.24 827 810 168.1
A 15 174 26914 155.32 827 810 168.1
A 5 16 22391 128.41 827 810 168.1
B 10 16 118223 741.88 825 808 158.3
B 10 245 25085 153.39 825 808 158.3
B 12 111 16856 101.4 825 808 158.3
C 9 68 17418 89.92 792 798 184.8
C 13 61 5994 28.11 792 798 184.8
C 1 16 3036 12.11 792 798 184.8
D 2 16 2888593 15316.0 752 735 188.6
D 1 52 731653 3876.49 752 735 188.6
D 10 253 176900 934.31 752 735 188.6

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