ASTROSAT CZTI

Data Quality Report

Orbit 48140

Creation date: 2024-08-24T10:06:38.222234
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/AS1C09_009T01_9000006406_48140cztM0_level2.fits modeM0/AS1C09_009T01_9000006406_48140cztM0_level2_quad_clean.evt
Size (bytes)687,804,48086,780,160
Size655.9 MB 82.8 MB
Events in quadrant A7,655,194806,568
Events in quadrant B1,188,03648,417
Events in quadrant C3,697,016782,600
Events in quadrant D12,390,631514,584

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275601
B073211
C0155631
D0414187

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67503134.637037%
B67516751100.000000%
C67511782.636646%
D6750372955.244444%

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 7800 6751 32 32 0.41% 0.47%
B 7801 6730 0 0 0.00% 0.00%
C 7801 6752 132 132 1.69% 1.95%
D 7800 6750 3201 3201 41.04% 47.42%

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 10 83 4396719 26359.88 801 786 166.8
A 13 6 91962 546.73 801 786 166.8
A 13 248 56643 334.94 801 786 166.8
B 2 177 931015 76307.61 50 48 12.2
B 4 21 21337 1744.97 50 48 12.2
B 0 200 20100 1643.58 50 48 12.2
C 10 187 483291 2603.02 786 792 185.4
C 12 2 99000 529.82 786 792 185.4
C 12 249 20089 104.11 786 792 185.4
D 12 2 9343575 63998.42 573 557 146.0
D 2 37 282616 1932.07 573 557 146.0
D 2 165 192815 1316.94 573 557 146.0

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