ASTROSAT CZTI

Data Quality Report

Orbit 50884

Creation date: 2025-02-24T09:50:30.333314
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/AS1C07_001T01_9000006450_50884cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50884cztM0_level2_quad_clean.evt
Size (bytes)552,257,28089,674,560
Size526.7 MB 85.5 MB
Events in quadrant A4,970,831590,021
Events in quadrant B3,391,131661,123
Events in quadrant C5,811,265535,140
Events in quadrant D5,789,672496,986

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189561
B0143551
C0215061
D0214321

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61884036.512605%
B61881632.634131%
C618868611.085973%
D618880012.928248%

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 7308 6189 250 250 3.42% 4.04%
B 7308 6189 39 39 0.53% 0.63%
C 7308 6189 545 545 7.46% 8.81%
D 7308 6189 661 661 9.04% 10.68%

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 4 527213 3168.99 666 648 166.2
A 4 249 476441 2863.43 666 648 166.2
A 7 206 248206 1489.86 666 648 166.2
B 4 206 246989 1727.57 667 643 142.6
B 4 81 86644 603.1 667 643 142.6
B 10 247 65498 454.81 667 643 142.6
C 1 29 1140700 6594.59 631 625 172.9
C 13 3 793040 4583.6 631 625 172.9
C 5 10 435927 2517.94 631 625 172.9
D 11 245 2081569 12132.36 620 598 171.5
D 2 249 549626 3200.91 620 598 171.5
D 3 12 226925 1319.52 620 598 171.5

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