ASTROSAT CZTI

Data Quality Report

Orbit 42194

Creation date: 2024-06-27T22:38:22.006370
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_088T58_9000005772_42194cztM0_level2.fits modeM0/AS1A12_088T58_9000005772_42194cztM0_level2_quad_clean.evt
Size (bytes)318,130,56091,103,040
Size303.4 MB 86.9 MB
Events in quadrant A2,979,107606,579
Events in quadrant B2,643,721626,073
Events in quadrant C2,637,886600,734
Events in quadrant D3,085,052538,522

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121714
B0115775
C0113312
D0130932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5520190.344203%
B5519180.326146%
C552130.054338%
D55211352.445209%

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 7164 5522 5 5 0.07% 0.09%
B 7164 5521 12 12 0.17% 0.22%
C 7164 5522 1 1 0.01% 0.02%
D 7164 5522 122 122 1.70% 2.21%

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 565445 4428.35 615 604 127.6
A 13 248 32376 249.09 615 604 127.6
A 3 137 6882 49.22 615 604 127.6
B 0 229 101584 850.02 607 591 118.8
B 3 112 74897 625.41 607 591 118.8
B 15 54 26011 213.95 607 591 118.8
C 15 214 233669 1671.2 595 599 139.5
C 7 220 51005 361.43 595 599 139.5
C 0 207 26355 184.68 595 599 139.5
D 2 249 251382 1755.38 591 575 142.9
D 1 47 114282 795.83 591 575 142.9
D 12 6 95965 667.63 591 575 142.9

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