ASTROSAT CZTI

Data Quality Report

Orbit 08335

Creation date: 2024-06-27T15:31:16.245691
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/AS1G07_029T01_9000001158_08335cztM0_level2.evt modeM0/AS1G07_029T01_9000001158_08335cztM0_level2_quad_clean.evt
Size (bytes)438,517,44073,031,040
Size418.2 MB 69.6 MB
Events in quadrant A3,158,524446,927
Events in quadrant B3,253,342455,957
Events in quadrant C3,213,771439,669
Events in quadrant D3,223,437425,756

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01302

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132375
B0134802
C0135822
D0138052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6354430.676739%
B6355480.755311%
C6355500.786782%
D6355330.519276%

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 8780 6357 0 0 0.00% 0.00%
B 8780 6357 1 1 0.01% 0.02%
C 8780 6357 23 23 0.26% 0.36%
D 8780 6357 13 13 0.15% 0.20%

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 15 239 19607 113.86 813 796 165.2
A 0 226 8046 43.88 813 796 165.2
A 12 194 7256 39.1 813 796 165.2
B 0 219 45325 290.95 815 798 153.0
B 12 111 17018 105.99 815 798 153.0
B 11 111 13663 84.06 815 798 153.0
C 9 54 170000 939.56 780 785 180.1
C 13 61 5940 28.62 780 785 180.1
C 3 202 1935 6.39 780 785 180.1
D 1 7 119002 635.29 774 756 186.1
D 2 152 61999 329.03 774 756 186.1
D 12 221 52409 277.51 774 756 186.1

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