ASTROSAT CZTI

Data Quality Report

Orbit 24617

Creation date: 2024-06-27T19:07:57.935984
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_189T01_9000003614_24617cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24617cztM0_level2_quad_clean.evt
Size (bytes)470,736,00070,536,960
Size448.9 MB 67.3 MB
Events in quadrant A3,356,489428,137
Events in quadrant B3,526,612429,712
Events in quadrant C3,356,251408,741
Events in quadrant D3,564,785405,211

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140212
B0145072
C0139692
D0148442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6651881.323109%
B66511412.119982%
C66511191.789205%
D6651741.112615%

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 7696 6651 0 0 0.00% 0.00%
B 7696 6651 28 28 0.36% 0.42%
C 7696 6652 1 1 0.01% 0.02%
D 7696 6651 2 2 0.03% 0.03%

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 12 96 11099 59.06 867 851 173.5
A 13 254 10098 53.29 867 851 173.5
A 3 137 7883 40.52 867 851 173.5
B 3 64 90813 546.27 854 832 164.7
B 0 245 62129 372.13 854 832 164.7
B 7 202 28713 169.26 854 832 164.7
C 14 238 131759 692.03 816 822 189.2
C 5 112 16151 81.02 816 822 189.2
C 7 247 10647 51.93 816 822 189.2
D 1 52 200475 998.62 830 806 199.9
D 8 195 172819 860.3 830 806 199.9
D 7 238 37961 185.83 830 806 199.9

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