ASTROSAT CZTI

Data Quality Report

Orbit 16703

Creation date: 2024-06-27T17:26:26.878653
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/AS1T03_024T01_9000002472_16703cztM0_level2.evt modeM0/AS1T03_024T01_9000002472_16703cztM0_level2_quad_clean.evt
Size (bytes)712,912,32077,837,760
Size679.9 MB 74.2 MB
Events in quadrant A5,999,802502,279
Events in quadrant B3,688,907519,296
Events in quadrant C3,700,723503,526
Events in quadrant D7,784,897401,118

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220113
B0151232
C0151142
D0274892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6158114918.658655%
B61581191.932446%
C61581472.387139%
D6158171927.914907%

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 7504 6160 635 635 8.46% 10.31%
B 7504 6160 2 2 0.03% 0.03%
C 7504 6160 4 4 0.05% 0.06%
D 7504 6160 1419 1419 18.91% 23.04%

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 15 174 2559705 15265.0 840 828 167.6
A 12 96 142122 842.89 840 828 167.6
A 3 1 23204 133.48 840 828 167.6
B 15 35 74830 450.69 892 875 164.1
B 5 236 44674 266.92 892 875 164.1
B 0 189 40009 238.49 892 875 164.1
C 14 238 137260 685.38 870 882 199.0
C 0 207 79471 394.96 870 882 199.0
C 3 233 64618 320.31 870 882 199.0
D 2 16 2856042 15436.78 767 749 185.0
D 1 52 1771643 9574.11 767 749 185.0
D 5 222 133891 719.82 767 749 185.0

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