ASTROSAT CZTI

Data Quality Report

Orbit 10995

Creation date: 2024-06-27T16:06:41.307455
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/AS1G08_027T06_9000001594_10995cztM0_level2.evt modeM0/AS1G08_027T06_9000001594_10995cztM0_level2_quad_clean.evt
Size (bytes)550,952,64066,706,560
Size525.4 MB 63.6 MB
Events in quadrant A3,887,458394,636
Events in quadrant B4,954,724390,216
Events in quadrant C3,160,000390,422
Events in quadrant D4,221,775369,734

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160133
B0190992
C0141072
D0171192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68101802.643172%
B68104556.681351%
C6810660.969163%
D68101752.569750%

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 7785 6810 91 91 1.17% 1.34%
B 7785 6810 247 247 3.17% 3.63%
C 7785 6810 13 13 0.17% 0.19%
D 7785 6810 94 94 1.21% 1.38%

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 8 5 649359 3935.66 805 788 164.8
A 14 254 123109 742.27 805 788 164.8
A 15 239 9381 52.14 805 788 164.8
B 4 239 1641982 10659.48 804 782 154.0
B 0 214 62431 400.41 804 782 154.0
B 3 189 30664 194.08 804 782 154.0
C 4 254 93080 505.08 785 787 182.7
C 4 238 6222 29.74 785 787 182.7
C 13 61 5867 27.8 785 787 182.7
D 1 52 774247 3860.62 768 752 200.4
D 11 129 193497 962.02 768 752 200.4
D 10 253 85753 424.25 768 752 200.4

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