ASTROSAT CZTI

Data Quality Report

Orbit 24707

Creation date: 2024-06-27T19:08:58.979131
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_191T01_9000003618_24707cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24707cztM0_level2_quad_clean.evt
Size (bytes)548,778,240141,056,640
Size523.4 MB 134.5 MB
Events in quadrant A3,276,284986,917
Events in quadrant B3,325,895993,729
Events in quadrant C4,582,059936,926
Events in quadrant D5,016,467922,702

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137261
B0138991
C0175761
D0193221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6192560.904393%
B6192671.082041%
C61922343.779070%
D61932624.230583%

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 7457 6192 0 0 0.00% 0.00%
B 7457 6192 3 3 0.04% 0.05%
C 7457 6192 1 1 0.01% 0.02%
D 7458 6193 182 182 2.44% 2.94%

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 13 254 10626 58.32 849 834 167.9
A 0 226 7569 40.11 849 834 167.9
A 3 137 6880 36.01 849 834 167.9
B 0 230 19666 122.32 829 810 154.1
B 4 80 19014 118.09 829 810 154.1
B 0 189 18489 114.68 829 810 154.1
C 7 247 1275015 6995.27 804 811 182.2
C 14 238 130804 713.65 804 811 182.2
C 10 9 16353 85.32 804 811 182.2
D 1 52 1209061 6141.49 824 804 196.7
D 12 233 451875 2292.76 824 804 196.7
D 8 195 207383 1050.03 824 804 196.7

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