ASTROSAT CZTI

Data Quality Report

Orbit 46494

Creation date: 2024-06-27T23:23:50.735750
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/AS1A13_068T05_9000006218_46494cztM0_level2.fits modeM0/AS1A13_068T05_9000006218_46494cztM0_level2_quad_clean.evt
Size (bytes)530,956,800118,846,080
Size506.4 MB 113.3 MB
Events in quadrant A6,388,129796,423
Events in quadrant B4,002,130807,523
Events in quadrant C3,273,160778,585
Events in quadrant D5,416,725700,317

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232190
B0170220
C0151830
D0212650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7409590.796329%
B74091081.457687%
C740940.053988%
D74092022.726414%

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 7409 7409 1 1 0.01% 0.01%
B 7409 7409 87 87 1.17% 1.17%
C 7409 7409 2 2 0.03% 0.03%
D 7409 7409 164 164 2.21% 2.21%

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 10 83 3145725 18007.5 829 809 174.6
A 13 254 14105 76.13 829 809 174.6
A 14 235 9968 52.44 829 809 174.6
B 4 171 339622 2093.43 821 795 161.9
B 5 172 124504 764.33 821 795 161.9
B 8 234 122877 754.28 821 795 161.9
C 14 254 54036 275.13 817 821 193.4
C 3 233 24514 122.49 817 821 193.4
C 1 3 13609 66.11 817 821 193.4
D 1 52 733705 3612.64 807 783 202.9
D 12 128 559381 2753.38 807 783 202.9
D 7 80 320355 1575.2 807 783 202.9

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