ASTROSAT CZTI

Data Quality Report

Orbit 50650

Creation date: 2025-02-07T23:21:31.264538
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/AS1T05_241T01_9000006446_50650cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50650cztM0_level2_quad_clean.evt
Size (bytes)561,663,36085,026,240
Size535.6 MB 81.1 MB
Events in quadrant A4,964,938526,839
Events in quadrant B4,405,693617,588
Events in quadrant C6,102,268501,721
Events in quadrant D4,843,845500,690

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187491
B0172951
C0223171
D0187811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61206089.934641%
B61191592.598464%
C611971611.701258%
D61193906.373590%

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 7140 6121 512 512 7.17% 8.36%
B 7139 6120 96 96 1.34% 1.57%
C 7139 6120 567 567 7.94% 9.26%
D 7139 6120 314 314 4.40% 5.13%

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 4 249 624590 4025.43 615 600 155.0
A 3 130 498411 3211.44 615 600 155.0
A 8 247 276061 1777.03 615 600 155.0
B 4 170 1106041 8132.57 633 612 135.9
B 5 185 254935 1871.04 633 612 135.9
B 4 206 144218 1056.5 633 612 135.9
C 4 5 1225689 7363.68 599 594 166.4
C 15 1 774047 4648.99 599 594 166.4
C 15 174 498157 2990.7 599 594 166.4
D 7 96 541508 3210.19 608 587 168.5
D 2 249 493976 2928.11 608 587 168.5
D 15 122 259967 1539.34 608 587 168.5

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