ASTROSAT CZTI

Data Quality Report

Orbit 40915

Creation date: 2024-06-27T22:22:10.435971
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/AS1T05_101T01_9000005578_40915cztM0_level2.fits modeM0/AS1T05_101T01_9000005578_40915cztM0_level2_quad_clean.evt
Size (bytes)237,487,68066,922,560
Size226.5 MB 63.8 MB
Events in quadrant A2,056,062447,887
Events in quadrant B1,962,875458,186
Events in quadrant C1,857,010437,115
Events in quadrant D2,588,055388,457

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086470
B088660
C084130
D0108060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A418130.071753%
B4181200.478354%
C418120.047835%
D41811824.353026%

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 4181 4181 1 1 0.02% 0.02%
B 4181 4181 11 11 0.26% 0.26%
C 4181 4181 0 0 0.00% 0.00%
D 4181 4181 143 143 3.42% 3.42%

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 325064 3545.03 439 430 91.6
A 15 252 11780 123.94 439 430 91.6
A 13 248 7421 76.34 439 430 91.6
B 5 255 73250 846.45 437 423 86.0
B 0 190 68131 786.95 437 423 86.0
B 0 245 37652 432.7 437 423 86.0
C 15 214 178070 1793.1 426 427 99.1
C 0 207 9401 90.58 426 427 99.1
C 3 233 5513 51.34 426 427 99.1
D 2 249 406809 3969.95 418 405 102.4
D 12 16 269763 2631.22 418 405 102.4
D 5 32 82092 797.96 418 405 102.4

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