ASTROSAT CZTI

Data Quality Report

Orbit 27677

Creation date: 2024-06-27T19:42:53.632159
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_257T01_9000003976_27677cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27677cztM0_level2_quad_clean.evt
Size (bytes)2,327,728,320317,868,480
Size2.2 GB 303.1 MB
Events in quadrant A12,387,0672,092,177
Events in quadrant B12,948,0252,153,349
Events in quadrant C12,947,7242,012,644
Events in quadrant D30,526,8221,646,678

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0526340
B0539010
C0537910
D01076240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A250301660.663204%
B250312230.890895%
C250313221.286405%
D25031692127.649714%

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 31490 25032 15 15 0.05% 0.06%
B 31491 25032 23 23 0.07% 0.09%
C 31491 25032 13 13 0.04% 0.05%
D 31491 25031 6745 6745 21.42% 26.95%

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 13 248 51227 76.37 3188 3133 629.8
A 13 254 44243 65.28 3188 3133 629.8
A 8 192 34475 49.77 3188 3133 629.8
B 3 64 212953 353.07 3202 3126 594.3
B 0 230 102570 167.33 3202 3126 594.3
B 12 111 71064 114.32 3202 3126 594.3
C 14 238 498172 696.84 3073 3102 710.5
C 3 233 284157 395.6 3073 3102 710.5
C 15 208 92628 126.01 3073 3102 710.5
D 12 2 16021708 26236.92 2572 2507 610.6
D 1 52 2860945 4681.67 2572 2507 610.6
D 2 250 1220824 1995.41 2572 2507 610.6

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