ASTROSAT CZTI

Data Quality Report

Orbit 34738

Creation date: 2022-03-03T10:57:00.470916
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/AS1A10_048T04_9000004984_34738cztM0_level2.evt modeM0/AS1A10_048T04_9000004984_34738cztM0_level2_quad_clean.evt
Size (bytes)533,410,56076,452,480
Size508.7 MB 72.9 MB
Events in quadrant A2,810,256490,365
Events in quadrant B2,925,339504,269
Events in quadrant C3,212,081486,160
Events in quadrant D6,836,429451,751

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119122
B0120231
C0126861
D0240791

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5468160.292612%
B5468450.822970%
C5468891.627652%
D5468119221.799561%

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 7291 5469 6 6 0.08% 0.11%
B 7291 5469 27 27 0.37% 0.49%
C 7291 5469 81 81 1.11% 1.48%
D 7291 5469 1129 1129 15.48% 20.64%

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 15 169 93208 706.73 657 647 131.0
A 15 223 79210 599.85 657 647 131.0
A 10 83 48374 364.41 657 647 131.0
B 4 171 109426 858.58 657 639 126.7
B 5 172 83043 650.36 657 639 126.7
B 0 190 54284 423.38 657 639 126.7
C 0 207 341847 2273.53 642 647 150.1
C 15 214 231454 1537.95 642 647 150.1
C 0 10 87559 579.13 642 647 150.1
D 1 52 3229532 22817.97 587 574 141.5
D 8 195 627082 4427.32 587 574 141.5
D 10 118 230493 1624.76 587 574 141.5

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