ASTROSAT CZTI

Data Quality Report

Orbit 40899

Creation date: 2024-06-27T22:21:57.091965
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/AS1A12_102T01_9000005576_40899cztM0_level2.fits modeM0/AS1A12_102T01_9000005576_40899cztM0_level2_quad_clean.evt
Size (bytes)55,336,32016,669,440
Size52.8 MB 15.9 MB
Events in quadrant A553,395107,931
Events in quadrant B506,156109,455
Events in quadrant C454,538108,137
Events in quadrant D450,363100,013

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023242
B023371
C021131
D022041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A103340.387222%
B1033272.613746%
C103340.387222%
D1033100.968054%

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 1033 1033 2 2 0.19% 0.19%
B 1033 1033 18 18 1.74% 1.74%
C 1033 1033 2 2 0.19% 0.19%
D 1033 1033 7 7 0.68% 0.68%

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 10 83 153377 6694.9 101 99 22.9
A 13 6 3803 161.78 101 99 22.9
A 12 189 2792 117.63 101 99 22.9
B 5 255 97649 4509.77 101 98 21.6
B 0 190 5247 238.04 101 98 21.6
B 12 111 2450 108.73 101 98 21.6
C 15 214 47436 1883.96 99 100 25.1
C 0 10 15888 628.36 99 100 25.1
C 5 10 1869 70.41 99 100 25.1
D 12 6 57755 2215.21 97 94 26.0
D 13 249 6911 261.89 97 94 26.0
D 2 234 4996 188.32 97 94 26.0

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