ASTROSAT CZTI

Data Quality Report

Orbit 04809

Creation date: 2024-06-27T14:47:18.143965
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/AS1G05_002T03_9000000608_04809cztM0_level2.evt modeM0/AS1G05_002T03_9000000608_04809cztM0_level2_quad_clean.evt
Size (bytes)442,344,96050,788,800
Size421.9 MB 48.4 MB
Events in quadrant A2,323,368302,352
Events in quadrant B2,366,231306,316
Events in quadrant C2,427,928306,471
Events in quadrant D5,931,725264,505

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105821
B0106361
C0109331
D0212021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5102330.646805%
B5102290.568405%
C5102781.528812%
D5102134026.264210%

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 5857 5103 10 10 0.17% 0.20%
B 5857 5103 4 4 0.07% 0.08%
C 5857 5103 43 43 0.73% 0.84%
D 5857 5103 1344 1344 22.95% 26.34%

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 13 251 67671 559.15 575 561 120.0
A 13 6 16198 130.29 575 561 120.0
A 0 50 12618 100.46 575 561 120.0
B 14 167 19844 168.18 583 569 114.6
B 10 246 18477 156.25 583 569 114.6
B 15 54 13728 114.81 583 569 114.6
C 9 247 226718 1731.44 555 559 130.6
C 8 128 14940 110.1 555 559 130.6
C 8 112 6768 47.53 555 559 130.6
D 13 235 3466363 27989.44 505 489 123.8
D 12 79 262214 2113.62 505 489 123.8
D 2 136 110407 887.67 505 489 123.8

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