ASTROSAT CZTI

Data Quality Report

Orbit 15155

Creation date: 2024-06-27T17:04:31.053742
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_218T08_9000002236_15155cztM0_level2.evt modeM0/AS1A04_218T08_9000002236_15155cztM0_level2_quad_clean.evt
Size (bytes)464,267,520105,765,120
Size442.8 MB 100.9 MB
Events in quadrant A3,589,951681,361
Events in quadrant B3,444,200708,989
Events in quadrant C3,504,413704,315
Events in quadrant D3,087,361662,061

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150103
B0141302
C0143662
D0134912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6399210.328176%
B6399270.421941%
C6399160.250039%
D6399170.265667%

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 7800 6401 0 0 0.00% 0.00%
B 7800 6401 8 8 0.10% 0.12%
C 7800 6401 4 4 0.05% 0.06%
D 7800 6401 9 9 0.12% 0.14%

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 15 239 534806 3414.73 788 774 156.4
A 12 189 24585 152.25 788 774 156.4
A 0 226 6915 39.26 788 774 156.4
B 0 229 146514 982.89 806 786 148.3
B 3 64 75412 503.33 806 786 148.3
B 4 48 29050 190.63 806 786 148.3
C 3 233 416673 2319.86 789 796 179.3
C 13 61 5669 27.18 789 796 179.3
C 9 236 5247 24.83 789 796 179.3
D 2 16 67899 359.52 774 754 186.8
D 2 33 42854 225.42 774 754 186.8
D 2 234 23092 119.61 774 754 186.8

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