ASTROSAT CZTI

Data Quality Report

Orbit 40262

Creation date: 2024-06-27T22:14:19.931938
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/AS1A12_022T01_9000005536_40262cztM0_level2.fits modeM0/AS1A12_022T01_9000005536_40262cztM0_level2_quad_clean.evt
Size (bytes)165,072,96044,979,840
Size157.4 MB 42.9 MB
Events in quadrant A1,375,028294,598
Events in quadrant B1,133,548305,936
Events in quadrant C1,478,434296,023
Events in quadrant D1,901,969264,362

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059901
B056441
C063741
D078251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A281530.106572%
B281520.071048%
C2815250.888099%
D28151665.896980%

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 2815 2815 2 2 0.07% 0.07%
B 2815 2815 0 0 0.00% 0.00%
C 2815 2815 21 21 0.75% 0.75%
D 2815 2815 158 158 5.61% 5.61%

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 10 83 235986 4009.72 281 275 58.8
A 2 79 32285 544.53 281 275 58.8
A 13 6 8135 133.71 281 275 58.8
B 5 255 8021 137.05 284 275 56.5
B 0 245 8000 136.68 284 275 56.5
B 12 111 7083 120.46 284 275 56.5
C 14 254 168340 2551.77 276 277 65.9
C 15 214 120841 1830.57 276 277 65.9
C 15 208 99276 1503.14 276 277 65.9
D 12 0 535658 8094.8 265 258 66.1
D 12 227 306298 4627.07 265 258 66.1
D 2 250 23335 348.9 265 258 66.1

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