ASTROSAT CZTI

Data Quality Report

Orbit 40635

Creation date: 2024-06-27T22:18:31.369929
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_029T01_9000005556_40635cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40635cztM0_level2_quad_clean.evt
Size (bytes)306,676,80087,387,840
Size292.5 MB 83.3 MB
Events in quadrant A2,766,332602,317
Events in quadrant B2,613,599621,524
Events in quadrant C2,491,635579,920
Events in quadrant D3,085,433487,854

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110693
B0109012
C0103652
D0125112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5062100.197550%
B5062370.730936%
C506280.158040%
D506250810.035559%

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 7186 5063 4 4 0.06% 0.08%
B 7186 5063 17 17 0.24% 0.34%
C 7186 5063 6 6 0.08% 0.12%
D 7186 5062 227 227 3.16% 4.48%

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 460151 3843.02 588 578 119.6
A 2 79 29361 240.69 588 578 119.6
A 1 113 7080 54.37 588 578 119.6
B 0 190 115832 1023.63 582 567 112.6
B 5 255 93188 822.54 582 567 112.6
B 0 229 74470 656.31 582 567 112.6
C 15 214 223343 1699.22 563 567 131.1
C 14 254 36480 273.93 563 567 131.1
C 15 159 21137 156.9 563 567 131.1
D 13 249 669977 5123.67 532 519 130.7
D 12 191 144151 1099.28 532 519 130.7
D 2 250 83390 634.25 532 519 130.7

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