ASTROSAT CZTI

Data Quality Report

Orbit 20239

Creation date: 2024-06-27T18:12:52.304854
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/AS1T03_123T01_9000003000_20239cztM0_level2.evt modeM0/AS1T03_123T01_9000003000_20239cztM0_level2_quad_clean.evt
Size (bytes)521,377,92078,471,360
Size497.2 MB 74.8 MB
Events in quadrant A3,642,851478,264
Events in quadrant B3,885,945481,784
Events in quadrant C3,555,167455,716
Events in quadrant D4,213,412455,327

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152902
B0160222
C0150042
D0172762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72491582.179611%
B72491702.345151%
C72491552.138226%
D72491462.014071%

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 7729 7250 24 24 0.31% 0.33%
B 7729 7250 6 6 0.08% 0.08%
C 7729 7250 3 3 0.04% 0.04%
D 7729 7250 52 52 0.67% 0.72%

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 4 2 120856 655.36 909 890 183.1
A 3 1 12127 61.39 909 890 183.1
A 8 205 8140 39.61 909 890 183.1
B 10 245 335405 1909.96 902 878 175.1
B 12 111 21977 120.46 902 878 175.1
B 11 111 19557 106.65 902 878 175.1
C 14 238 133014 646.74 863 869 204.3
C 3 233 40196 192.47 863 869 204.3
C 9 54 16505 76.53 863 869 204.3
D 7 238 505373 2337.68 883 857 215.8
D 1 52 316353 1461.86 883 857 215.8
D 2 234 34583 156.27 883 857 215.8

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