ASTROSAT CZTI

Data Quality Report

Orbit 31637

Creation date: 2024-06-27T20:30:56.829145
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/AS1A10_123T01_9000004620_31637cztM0_level2.evt modeM0/AS1A10_123T01_9000004620_31637cztM0_level2_quad_clean.evt
Size (bytes)1,604,684,160201,816,000
Size1.5 GB 192.5 MB
Events in quadrant A7,253,6821,356,221
Events in quadrant B13,499,5391,304,580
Events in quadrant C8,816,3461,287,955
Events in quadrant D17,985,4941,092,943

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0317642
B0513822
C0358482
D0647542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154933892.510811%
B1549311607.487252%
C154938715.621894%
D15493290818.769767%

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 15848 15495 0 0 0.00% 0.00%
B 15848 15495 497 497 3.14% 3.21%
C 15848 15495 302 302 1.91% 1.95%
D 15848 15495 2553 2553 16.11% 16.48%

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 29421 72.81 1875 1830 378.9
A 3 137 19094 45.56 1875 1830 378.9
A 0 226 15467 35.99 1875 1830 378.9
B 6 159 4247778 12296.67 1814 1766 345.3
B 5 172 1080314 3123.53 1814 1766 345.3
B 10 245 466085 1344.69 1814 1766 345.3
C 3 233 1379469 3328.78 1772 1783 413.9
C 14 238 312174 749.97 1772 1783 413.9
C 0 10 81416 192.41 1772 1783 413.9
D 11 176 4661744 11500.85 1675 1625 405.2
D 8 195 3725801 9191.01 1675 1625 405.2
D 13 249 2321943 5726.38 1675 1625 405.2

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