ASTROSAT CZTI

Data Quality Report

Orbit 18738

Creation date: 2024-06-27T17:54:06.753907
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_072T04_9000002802_18738cztM0_level2.evt modeM0/AS1A05_072T04_9000002802_18738cztM0_level2_quad_clean.evt
Size (bytes)1,315,523,520241,908,480
Size1.2 GB 230.7 MB
Events in quadrant A8,667,8751,519,916
Events in quadrant B11,791,1041,529,598
Events in quadrant C8,833,5521,512,931
Events in quadrant D9,288,5301,480,621

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0384146
B0477015
C0385825
D0412695

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186231380.741019%
B186248824.735825%
C186242471.326246%
D186244902.631014%

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 20423 18627 1 1 0.00% 0.01%
B 20424 18628 473 473 2.32% 2.54%
C 20424 18628 0 0 0.00% 0.00%
D 20424 18628 301 301 1.47% 1.62%

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 15 192 71534 156.73 2213 2169 442.6
A 11 29 30252 63.45 2213 2169 442.6
A 13 254 28743 60.04 2213 2169 442.6
B 10 245 2784295 6672.63 2192 2130 417.0
B 4 216 138163 326.26 2192 2130 417.0
B 0 197 94459 221.44 2192 2130 417.0
C 14 238 327171 651.68 2132 2146 498.7
C 3 233 165113 326.75 2132 2146 498.7
C 13 61 15059 25.89 2132 2146 498.7
D 14 34 981862 1899.2 2132 2074 515.9
D 2 234 77975 147.12 2132 2074 515.9
D 7 238 75699 142.71 2132 2074 515.9

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