ASTROSAT CZTI

Data Quality Report

Orbit 37312

Creation date: 2024-06-27T21:38:18.481750
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/AS1A11_030T02_9000005310_37312cztM0_level2.evt modeM0/AS1A11_030T02_9000005310_37312cztM0_level2_quad_clean.evt
Size (bytes)1,267,266,240217,978,560
Size1.2 GB 207.9 MB
Events in quadrant A9,991,6461,383,903
Events in quadrant B9,705,1461,404,822
Events in quadrant C8,149,9521,410,115
Events in quadrant D9,481,8231,328,981

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396125
B0393944
C0336524
D0389714

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155586644.267901%
B155587474.801388%
C155581861.195526%
D155584472.873120%

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 19825 15561 557 557 2.81% 3.58%
B 19825 15561 419 419 2.11% 2.69%
C 19825 15561 132 132 0.67% 0.85%
D 19825 15561 350 350 1.77% 2.25%

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 15 237 2226825 6413.08 1726 1690 347.0
A 10 83 703043 2021.37 1726 1690 347.0
A 13 248 200314 572.45 1726 1690 347.0
B 5 172 1374974 4204.23 1714 1669 326.6
B 0 213 740195 2260.92 1714 1669 326.6
B 12 18 458991 1400.04 1714 1669 326.6
C 15 214 646411 1613.63 1715 1729 399.5
C 1 23 346351 862.58 1715 1729 399.5
C 0 10 312355 777.49 1715 1729 399.5
D 2 249 1228561 2935.08 1702 1653 418.0
D 13 249 736475 1757.89 1702 1653 418.0
D 13 171 235630 559.73 1702 1653 418.0

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