ASTROSAT CZTI

Data Quality Report

Orbit 16793

Creation date: 2024-06-27T17:28:02.244984
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/AS1A05_004T07_9000002492_16793cztM0_level2.evt modeM0/AS1A05_004T07_9000002492_16793cztM0_level2_quad_clean.evt
Size (bytes)553,026,24096,171,840
Size527.4 MB 91.7 MB
Events in quadrant A3,982,358617,752
Events in quadrant B3,513,756629,676
Events in quadrant C4,336,546607,305
Events in quadrant D4,461,422590,347

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161762
B0146771
C0171871
D0177051

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67102854.247392%
B67101201.788376%
C67101352.011923%
D67102694.008942%

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 7471 6713 169 169 2.26% 2.52%
B 7471 6713 31 31 0.41% 0.46%
C 7471 6713 2 2 0.03% 0.03%
D 7471 6713 174 174 2.33% 2.59%

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 706694 4300.75 813 794 164.1
A 15 190 81942 494.4 813 794 164.1
A 15 158 38529 229.9 813 794 164.1
B 0 229 205089 1301.86 816 794 156.9
B 0 189 50134 314.41 816 794 156.9
B 15 35 44515 278.61 816 794 156.9
C 3 233 1077048 5858.25 789 793 183.7
C 14 238 120331 650.67 789 793 183.7
C 0 207 31873 169.17 789 793 183.7
D 1 52 1134891 5837.08 796 773 194.3
D 12 218 150999 773.18 796 773 194.3
D 13 248 73985 376.81 796 773 194.3

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