ASTROSAT CZTI

Data Quality Report

Orbit 11985

Creation date: 2024-06-27T16:20:55.056169
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/AS1A04_082T01_9000001772_11985cztM0_level2.evt modeM0/AS1A04_082T01_9000001772_11985cztM0_level2_quad_clean.evt
Size (bytes)461,949,12093,879,360
Size440.5 MB 89.5 MB
Events in quadrant A3,418,783610,034
Events in quadrant B3,828,247616,507
Events in quadrant C2,939,287601,016
Events in quadrant D3,367,752567,624

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144863
B0155742
C0132002
D0141792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6420821.277259%
B64202523.925234%
C6420130.202492%
D6420260.404984%

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 9086 6422 2 2 0.02% 0.03%
B 9086 6421 114 114 1.25% 1.78%
C 9086 6423 0 0 0.00% 0.00%
D 9086 6423 11 11 0.12% 0.17%

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 1 162 161871 1028.93 773 759 156.6
A 1 178 88224 558.59 773 759 156.6
A 1 161 76509 483.77 773 759 156.6
B 4 239 614461 4199.61 777 760 146.1
B 3 64 64868 438.7 777 760 146.1
B 15 204 52223 352.17 777 760 146.1
C 1 16 11584 62.78 750 753 172.5
C 13 61 5533 27.71 750 753 172.5
C 8 208 3872 18.08 750 753 172.5
D 8 195 313254 1776.63 734 712 175.9
D 1 52 133821 756.65 734 712 175.9
D 9 85 38459 214.57 734 712 175.9

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