ASTROSAT CZTI

Data Quality Report

Orbit 38756

Creation date: 2024-06-27T21:56:02.632940
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/AS1A12_054T01_9000005392_38756cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38756cztM0_level2_quad_clean.evt
Size (bytes)366,134,40092,568,960
Size349.2 MB 88.3 MB
Events in quadrant A2,982,610627,373
Events in quadrant B2,891,567629,778
Events in quadrant C2,807,608602,092
Events in quadrant D4,434,045550,590

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121133
B0123402
C0117352
D0170302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5620230.409253%
B56201041.850534%
C5620350.622776%
D56201482.633452%

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 6993 5621 17 17 0.24% 0.30%
B 6993 5621 75 75 1.07% 1.33%
C 6993 5621 32 32 0.46% 0.57%
D 6993 5621 108 108 1.54% 1.92%

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 428110 3317.1 629 617 128.9
A 9 143 41790 319.48 629 617 128.9
A 13 248 33925 258.45 629 617 128.9
B 4 171 309353 2547.01 620 604 121.2
B 5 172 49149 400.47 620 604 121.2
B 15 85 25853 208.29 620 604 121.2
C 15 214 250489 1752.11 610 614 142.6
C 14 254 67073 466.01 610 614 142.6
C 0 10 59403 412.23 610 614 142.6
D 2 16 1401638 9307.23 607 589 150.5
D 5 222 291358 1931.59 607 589 150.5
D 10 118 217560 1441.35 607 589 150.5

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