ASTROSAT CZTI

Data Quality Report

Orbit 18951

Creation date: 2024-06-27T17:56:58.222763
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/AS1T03_090T01_9000002822_18951cztM0_level2.evt modeM0/AS1T03_090T01_9000002822_18951cztM0_level2_quad_clean.evt
Size (bytes)230,803,20043,047,360
Size220.1 MB 41.1 MB
Events in quadrant A2,874,826257,872
Events in quadrant B1,478,285297,289
Events in quadrant C1,048,113292,534
Events in quadrant D1,424,059282,975

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101930
B059260
C047950
D058630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A239463426.482874%
B2395451.878914%
C239550.208768%
D2395853.549061%

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 2394 2394 419 419 17.50% 17.50%
B 2395 2395 30 30 1.25% 1.25%
C 2395 2395 0 0 0.00% 0.00%
D 2395 2395 65 65 2.71% 2.71%

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 14 235 1930972 37917.12 244 240 50.9
A 0 226 2148 37.47 244 240 50.9
A 12 194 1905 32.7 244 240 50.9
B 3 112 320901 6050.67 267 261 53.0
B 0 189 60726 1141.01 267 261 53.0
B 3 64 19598 364.9 267 261 53.0
C 14 238 39953 648.09 256 256 61.3
C 8 128 4410 67.82 256 256 61.3
C 8 112 2305 33.45 256 256 61.3
D 12 233 110850 1725.02 262 255 64.1
D 7 238 85281 1326.2 262 255 64.1
D 12 218 74386 1156.27 262 255 64.1

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