ASTROSAT CZTI

Data Quality Report

Orbit 11256

Creation date: 2024-06-27T16:10:28.482542
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/AS1C03_012T01_9000001642_11256cztM0_level2.evt modeM0/AS1C03_012T01_9000001642_11256cztM0_level2_quad_clean.evt
Size (bytes)634,357,44079,257,600
Size605.0 MB 75.6 MB
Events in quadrant A3,928,843506,880
Events in quadrant B3,831,504516,396
Events in quadrant C2,999,205508,804
Events in quadrant D8,031,232433,645

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155932
B0153131
C0130011
D0281481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62172133.426090%
B62172003.216986%
C6217420.675567%
D6217185229.789287%

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 7292 6218 145 145 1.99% 2.33%
B 7292 6218 90 90 1.23% 1.45%
C 7292 6218 15 15 0.21% 0.24%
D 7292 6218 1481 1481 20.31% 23.82%

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 14 238 564072 3594.99 760 746 156.7
A 8 5 282749 1799.67 760 746 156.7
A 8 15 76748 485.02 760 746 156.7
B 4 239 554143 3825.77 765 750 144.6
B 11 51 132578 911.37 765 750 144.6
B 15 204 59458 405.87 765 750 144.6
C 9 204 84228 483.59 747 754 172.6
C 13 61 5517 27.59 747 754 172.6
C 7 238 1961 6.99 747 754 172.6
D 13 104 2177570 13998.15 650 635 155.5
D 13 152 2112488 13579.66 650 635 155.5
D 8 195 426550 2738.72 650 635 155.5

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