ASTROSAT CZTI

Data Quality Report

Orbit 20160521_G05_192T01_9000000466_level2

Creation date: 2025-10-29T18:32:58.876825
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_192T01_9000000466cztM0_level2.fits modeM0/AS1G05_192T01_9000000466cztM0_level2_quad_clean.evt
Size (bytes)421,320,960464,359,680
Size401.8 MB 442.8 MB
Events in quadrant A2,519,1382,833,642
Events in quadrant B2,439,4362,840,539
Events in quadrant C2,513,2342,735,812
Events in quadrant D2,184,0362,550,447

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09200
B09200
C09200
D09200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01012420
B01036460
C01001810
D0951010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A452168321.840057%
B452166561.450814%
C452167271.607838%
D452164781.057148%

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 53736 45208 0 0 0.00% 0.00%
B 53736 45212 0 0 0.00% 0.00%
C 53736 45212 0 0 0.00% 0.00%
D 53736 45211 0 0 0.00% 0.00%

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 29 2455 11.02 654 612 167.1
A 14 188 2447 10.98 654 612 167.1
A 14 204 2141 9.15 654 612 167.1
B 2 9 2078 11.17 645 614 131.1
B 12 226 1898 9.79 645 614 131.1
B 5 128 1730 8.51 645 614 131.1
C 9 188 1768 6.53 664 615 176.5
C 1 80 1755 6.46 664 615 176.5
C 1 81 1749 6.43 664 615 176.5
D 11 82 1982 8.4 622 565 168.7
D 7 5 1679 6.6 622 565 168.7
D 3 14 1627 6.3 622 565 168.7

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