ASTROSAT CZTI

Data Quality Report

Orbit 18477

Creation date: 2024-06-27T17:50:14.961016
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_072T02_9000002736_18477cztM0_level2.evt modeM0/AS1A05_072T02_9000002736_18477cztM0_level2_quad_clean.evt
Size (bytes)269,147,52029,234,880
Size256.7 MB 27.9 MB
Events in quadrant A1,628,426158,962
Events in quadrant B1,801,877162,251
Events in quadrant C2,733,988154,989
Events in quadrant D1,741,704154,365

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071950
B076440
C0107000
D075990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A358520.055788%
B3586140.390407%
C3586591.645287%
D3586190.529838%

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 3585 3585 0 0 0.00% 0.00%
B 3586 3586 9 9 0.25% 0.25%
C 3586 3586 0 0 0.00% 0.00%
D 3586 3586 15 15 0.42% 0.42%

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 0 13 6776 72.65 420 412 87.6
A 13 254 3872 39.5 420 412 87.6
A 0 226 3734 37.92 420 412 87.6
B 10 245 101727 1236.42 417 406 81.9
B 0 245 16864 200.84 417 406 81.9
B 15 222 12104 142.75 417 406 81.9
C 3 233 1096814 11483.02 399 401 95.5
C 14 238 62386 649.19 399 401 95.5
C 0 207 8826 88.24 399 401 95.5
D 7 38 87796 855.86 410 396 102.1
D 13 168 35326 342.05 410 396 102.1
D 2 234 19151 183.65 410 396 102.1

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