ASTROSAT CZTI

Data Quality Report

Orbit 40567

Creation date: 2024-06-27T22:17:41.360676
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_054T02_9000005550_40567cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40567cztM0_level2_quad_clean.evt
Size (bytes)410,713,92089,006,400
Size391.7 MB 84.9 MB
Events in quadrant A3,283,240639,926
Events in quadrant B4,682,461637,605
Events in quadrant C2,772,295617,969
Events in quadrant D4,008,779390,565

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134793
B0180212
C0120532
D0159632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5845130.222412%
B58451562.668948%
C5845220.376390%
D5845214736.732250%

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 7157 5846 4 4 0.06% 0.07%
B 7157 5846 81 81 1.13% 1.39%
C 7157 5846 14 14 0.20% 0.24%
D 7156 5845 103 103 1.44% 1.76%

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 547856 4262.47 630 617 128.4
A 12 189 142948 1108.62 630 617 128.4
A 15 191 137031 1062.53 630 617 128.4
B 3 112 2045479 17295.49 618 600 118.2
B 7 202 70111 587.92 618 600 118.2
B 0 230 46733 390.19 618 600 118.2
C 15 214 255342 1781.35 614 616 143.0
C 14 254 68753 476.5 614 616 143.0
C 0 10 31434 215.52 614 616 143.0
D 12 227 819008 6377.67 524 510 128.3
D 12 191 357387 2780.75 524 510 128.3
D 12 79 331298 2577.47 524 510 128.3

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