ASTROSAT CZTI

Data Quality Report

Orbit 01075

Creation date: 2024-06-27T14:07:03.882518
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/AS1P01_998T02_9000000190_01075cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01075cztM0_level2_quad_clean.evt
Size (bytes)1,202,489,280120,188,160
Size1.1 GB 114.6 MB
Events in quadrant A8,546,254810,118
Events in quadrant B8,969,950814,384
Events in quadrant C8,742,935782,436
Events in quadrant D9,677,481727,545

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306061
B0317574
C0311271
D0340431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A725980.110208%
B7258230.316892%
C725820.027556%
D72586468.900524%

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 7489 7260 270 270 3.61% 3.72%
B 7488 7259 333 333 4.45% 4.59%
C 7488 7259 233 233 3.11% 3.21%
D 7488 7259 1014 1014 13.54% 13.97%

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 0 253 77938 143.2 2202 2220 528.7
A 15 233 19689 33.04 2202 2220 528.7
A 11 79 8422 11.73 2202 2220 528.7
B 5 191 122097 220.14 2299 2307 544.1
B 5 249 39030 67.49 2299 2307 544.1
B 4 172 24265 40.35 2299 2307 544.1
C 15 241 370605 623.13 2115 2187 591.2
C 3 79 48607 78.51 2115 2187 591.2
C 3 111 36482 58.01 2115 2187 591.2
D 2 216 681054 1112.53 2016 2051 610.3
D 9 64 54891 86.58 2016 2051 610.3
D 10 125 47282 74.11 2016 2051 610.3

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