ASTROSAT CZTI

Data Quality Report

Orbit 27620

Creation date: 2024-06-27T19:42:15.601734
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_257T01_9000003976_27620cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27620cztM0_level2_quad_clean.evt
Size (bytes)471,954,24073,347,840
Size450.1 MB 69.9 MB
Events in quadrant A3,314,983449,159
Events in quadrant B3,575,671460,230
Events in quadrant C3,328,645433,163
Events in quadrant D3,622,193414,656

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138100
B0145730
C0138220
D0151350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6647310.466376%
B6647991.489394%
C6647550.827441%
D6647811.218595%

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 7787 6648 1 1 0.01% 0.02%
B 7787 6648 21 21 0.27% 0.32%
C 7787 6648 0 0 0.00% 0.00%
D 7787 6648 71 71 0.91% 1.07%

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 12 96 12226 67.13 854 837 169.6
A 13 254 10213 55.27 854 837 169.6
A 8 192 10185 55.1 854 837 169.6
B 10 245 148998 920.27 854 835 161.0
B 0 190 49615 302.98 854 835 161.0
B 12 111 19251 114.39 854 835 161.0
C 14 238 133488 690.67 818 823 192.1
C 13 61 5739 25.59 818 823 192.1
C 1 16 4855 20.99 818 823 192.1
D 7 80 181943 943.58 811 791 192.0
D 12 233 158949 823.81 811 791 192.0
D 1 52 88594 457.35 811 791 192.0

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