ASTROSAT CZTI

Data Quality Report

Orbit 40171

Creation date: 2024-06-27T22:13:25.039811
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_068T01_9000005526_40171cztM0_level2.fits modeM0/AS1A12_068T01_9000005526_40171cztM0_level2_quad_clean.evt
Size (bytes)365,820,48073,730,880
Size348.9 MB 70.3 MB
Events in quadrant A2,721,601498,927
Events in quadrant B2,515,638536,180
Events in quadrant C5,332,598439,256
Events in quadrant D2,638,415457,426

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106782
B0102942
C0187682
D0108132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A42732014.703955%
B42731543.604025%
C427390921.273110%
D42732205.148608%

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 6395 4274 176 176 2.75% 4.12%
B 6395 4274 134 134 2.10% 3.14%
C 6395 4274 988 988 15.45% 23.12%
D 6395 4274 227 227 3.55% 5.31%

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 487675 4973.03 478 470 98.0
A 10 83 326171 3324.52 478 470 98.0
A 7 3 45140 455.96 478 470 98.0
B 5 172 564484 6004.77 487 476 93.9
B 0 245 25606 267.55 487 476 93.9
B 12 111 11580 118.22 487 476 93.9
C 9 187 3362538 31893.83 451 455 105.4
C 15 214 162757 1539.65 451 455 105.4
C 0 10 32564 304.6 451 455 105.4
D 13 249 507054 4307.58 476 462 117.6
D 12 227 112798 955.2 476 462 117.6
D 9 19 84269 712.62 476 462 117.6

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