ASTROSAT CZTI

Data Quality Report

Orbit 27496

Creation date: 2024-06-27T19:40:38.601808
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_249T01_9000003934_27496cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27496cztM0_level2_quad_clean.evt
Size (bytes)1,313,982,720201,885,120
Size1.2 GB 192.5 MB
Events in quadrant A7,345,2401,302,522
Events in quadrant B9,082,4461,266,524
Events in quadrant C7,449,1211,242,075
Events in quadrant D14,851,1311,213,096

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0321160
B0370850
C0323360
D0551470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15795730.462172%
B157955593.539095%
C157951470.930674%
D1579513928.812915%

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 16940 15796 2 2 0.01% 0.01%
B 16940 15795 416 416 2.46% 2.63%
C 16940 15796 6 6 0.04% 0.04%
D 16940 15796 1210 1210 7.14% 7.66%

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 13 254 25812 62.89 1899 1855 380.9
A 3 137 18311 43.2 1899 1855 380.9
A 0 226 16064 37.3 1899 1855 380.9
B 3 64 1703721 4732.69 1856 1810 359.6
B 12 111 44446 118.56 1856 1810 359.6
B 11 111 40537 107.69 1856 1810 359.6
C 14 238 291016 676.33 1811 1816 427.6
C 10 22 57750 130.81 1811 1816 427.6
C 15 208 44341 99.45 1811 1816 427.6
D 1 52 7419922 17423.02 1786 1739 425.8
D 7 80 201091 468.22 1786 1739 425.8
D 2 250 193192 449.66 1786 1739 425.8

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