ASTROSAT CZTI

Data Quality Report

Orbit 06951

Creation date: 2024-06-27T15:13:35.540958
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/AS1A02_111T01_9000000954_06951cztM0_level2.evt modeM0/AS1A02_111T01_9000000954_06951cztM0_level2_quad_clean.evt
Size (bytes)506,341,44091,661,760
Size482.9 MB 87.4 MB
Events in quadrant A3,333,413574,745
Events in quadrant B3,856,912573,757
Events in quadrant C3,319,439568,433
Events in quadrant D4,325,514547,136

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151114
B0164813
C0151923
D0179973

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73481071.456179%
B73482142.912357%
C7348480.653239%
D73481041.415351%

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 7713 7350 0 0 0.00% 0.00%
B 7713 7350 45 45 0.58% 0.61%
C 7713 7350 0 0 0.00% 0.00%
D 7713 7350 29 29 0.38% 0.39%

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 0 143 14054 75.62 860 840 174.7
A 0 226 8339 42.92 860 840 174.7
A 12 194 7987 40.9 860 840 174.7
B 0 219 219110 1358.35 856 835 160.7
B 4 48 129646 801.61 856 835 160.7
B 0 245 66368 407.82 856 835 160.7
C 1 241 31723 159.85 833 836 193.2
C 7 247 29247 147.03 833 836 193.2
C 13 61 6649 30.08 833 836 193.2
D 8 195 451072 2225.12 831 804 202.4
D 2 136 226758 1116.61 831 804 202.4
D 2 152 182943 900.09 831 804 202.4

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