ASTROSAT CZTI

Data Quality Report

Orbit 31159

Creation date: 2024-06-27T20:24:39.460796
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/AS1C06_006T03_9000004502_31159cztM0_level2.evt modeM0/AS1C06_006T03_9000004502_31159cztM0_level2_quad_clean.evt
Size (bytes)301,112,64049,167,360
Size287.2 MB 46.9 MB
Events in quadrant A1,370,904332,657
Events in quadrant B2,422,068328,750
Events in quadrant C1,438,574321,729
Events in quadrant D3,682,929291,574

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060140
B095080
C061310
D0130650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A300020.066667%
B3000541.800000%
C3000381.266667%
D300146415.461513%

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 3001 3001 0 0 0.00% 0.00%
B 3001 3001 31 31 1.03% 1.03%
C 3001 3001 5 5 0.17% 0.17%
D 3002 3002 462 462 15.39% 15.39%

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 13 254 5910 75.7 354 346 73.5
A 3 137 3597 44.23 354 346 73.5
A 0 226 2974 35.75 354 346 73.5
B 6 159 812237 11918.31 345 337 68.1
B 12 18 166994 2446.45 345 337 68.1
B 0 190 27798 403.11 345 337 68.1
C 14 238 65007 800.55 338 340 80.8
C 0 10 21596 263.14 338 340 80.8
C 14 254 13546 163.48 338 340 80.8
D 8 195 1239338 14414.96 327 320 86.0
D 13 174 755842 8789.88 327 320 86.0
D 12 16 188873 2193.66 327 320 86.0

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