ASTROSAT CZTI

Data Quality Report

Orbit 13281

Creation date: 2024-06-27T16:38:45.025250
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/AS1T02_013T01_9000001976_13281cztM0_level2.evt modeM0/AS1T02_013T01_9000001976_13281cztM0_level2_quad_clean.evt
Size (bytes)574,001,28082,140,480
Size547.4 MB 78.3 MB
Events in quadrant A3,452,443543,502
Events in quadrant B6,407,494412,586
Events in quadrant C3,233,629546,923
Events in quadrant D3,836,603518,002

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143293
B0232652
C0138852
D0157242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66801171.751497%
B6680153823.023952%
C6680660.988024%
D66801822.724551%

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 8071 6683 2 2 0.02% 0.03%
B 8071 6682 883 883 10.94% 13.21%
C 8071 6683 12 12 0.15% 0.18%
D 8071 6683 76 76 0.94% 1.14%

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 8 15 182349 1066.06 827 809 170.3
A 1 162 39196 225.42 827 809 170.3
A 1 178 14087 77.97 827 809 170.3
B 4 239 3265606 23532.33 720 702 138.7
B 3 64 111903 801.5 720 702 138.7
B 10 244 64752 461.65 720 702 138.7
C 15 208 65496 341.41 811 818 189.4
C 14 234 8103 38.46 811 818 189.4
C 13 61 5857 26.6 811 818 189.4
D 1 52 379815 1936.3 802 782 195.8
D 13 249 321593 1638.88 802 782 195.8
D 8 195 28218 140.16 802 782 195.8

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