ASTROSAT CZTI

Data Quality Report

Orbit 45955

Creation date: 2024-06-27T23:18:08.727974
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_071T06_9000006146_45955cztM0_level2.fits modeM0/AS1A13_071T06_9000006146_45955cztM0_level2_quad_clean.evt
Size (bytes)664,165,440107,879,040
Size633.4 MB 102.9 MB
Events in quadrant A6,370,196716,742
Events in quadrant B8,384,712648,640
Events in quadrant C3,137,700750,275
Events in quadrant D6,153,106664,857

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232362
B0297672
C0145652
D0231612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69793935.631179%
B6979144320.676315%
C6979670.960023%
D69792603.725462%

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 7739 6979 112 112 1.45% 1.60%
B 7739 6979 1064 1064 13.75% 15.25%
C 7739 6979 4 4 0.05% 0.06%
D 7739 6979 175 175 2.26% 2.51%

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 3102891 19100.61 780 761 162.4
A 0 247 203002 1245.25 780 761 162.4
A 7 3 26432 158.06 780 761 162.4
B 3 112 5222072 35396.83 741 716 147.5
B 4 21 96883 651.94 741 716 147.5
B 0 186 62422 418.32 741 716 147.5
C 12 250 46690 249.53 779 784 184.0
C 12 249 21927 114.93 779 784 184.0
C 11 16 14576 74.97 779 784 184.0
D 11 241 2627698 13572.36 765 740 193.6
D 8 48 186402 959.24 765 740 193.6
D 13 249 101427 520.21 765 740 193.6

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