ASTROSAT CZTI

Data Quality Report

Orbit 00670

Creation date: 2024-06-27T14:01:20.255381
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/AS1P01_141T01_9000000096_00670cztM0_level2.evt modeM0/AS1P01_141T01_9000000096_00670cztM0_level2_quad_clean.evt
Size (bytes)653,175,36030,202,560
Size622.9 MB 28.8 MB
Events in quadrant A6,013,551201,096
Events in quadrant B5,890,985201,330
Events in quadrant C1,532,21237,433
Events in quadrant D6,077,027190,541

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213942
B0210712
C090942
D0215692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4944180.364078%
B4786150.313414%
C140910.070972%
D4944641.294498%

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 7100 4945 134 134 1.89% 2.71%
B 7100 4788 107 107 1.51% 2.23%
C 1409 1409 9 9 0.64% 0.64%
D 7100 4945 209 209 2.94% 4.23%

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 0 69 35985 102.06 1526 1511 337.8
A 14 79 33185 93.77 1526 1511 337.8
A 0 238 15104 40.24 1526 1511 337.8
B 7 221 163412 457.58 1461 1471 353.9
B 0 220 58975 162.48 1461 1471 353.9
B 5 191 35330 95.67 1461 1471 353.9
C 9 52 5107 42.42 387 400 111.0
C 15 241 3539 28.29 387 400 111.0
C 7 159 1495 9.87 387 400 111.0
D 9 64 157556 365.04 1357 1408 427.8
D 13 216 139181 322.08 1357 1408 427.8
D 13 221 115836 267.51 1357 1408 427.8

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