ASTROSAT CZTI

Data Quality Report

Orbit 44849

Creation date: 2024-06-27T23:07:10.910209
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/AS1A13_017T01_9000006028_44849cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44849cztM0_level2_quad_clean.evt
Size (bytes)443,041,920109,200,960
Size422.5 MB 104.1 MB
Events in quadrant A5,258,601732,344
Events in quadrant B3,347,036760,427
Events in quadrant C3,202,900718,362
Events in quadrant D4,106,470660,056

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205541
B0140979
C0137631
D0164451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62422644.229414%
B62381482.372555%
C62431572.514817%
D62421712.739507%

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 7432 6243 91 91 1.22% 1.46%
B 7432 6240 46 46 0.62% 0.74%
C 7433 6244 74 74 1.00% 1.19%
D 7432 6243 108 108 1.45% 1.73%

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 2050769 13469.27 739 724 152.2
A 13 248 347667 2279.5 739 724 152.2
A 3 137 8072 48.28 739 724 152.2
B 0 186 273147 1900.59 736 714 143.3
B 0 183 33702 230.14 736 714 143.3
B 0 155 31896 217.54 736 714 143.3
C 12 2 304698 1792.52 727 732 169.6
C 1 3 30754 177.04 727 732 169.6
C 11 16 15880 89.33 727 732 169.6
D 5 235 402547 2199.84 727 706 182.7
D 13 249 323625 1767.79 727 706 182.7
D 2 249 171262 933.69 727 706 182.7

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