ASTROSAT CZTI

Data Quality Report

Orbit 54984

Creation date: 2025-11-27T12:46:42.885525
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/AS1A14_014T01_9000006528_54984cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54984cztM0_level2_quad_clean.evt
Size (bytes)1,895,520,960198,956,160
Size1.8 GB 189.7 MB
Events in quadrant A11,256,1601,418,317
Events in quadrant B9,431,1361,634,232
Events in quadrant C8,400,7881,518,243
Events in quadrant D39,765,926284,129

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0459164
B0402503
C0374923
D012981311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03460
B03460
C03460
D03460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1694716299.612321%
B169489535.623082%
C169483602.124144%
D169471395782.356759%

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 19257 16950 1013 1013 5.26% 5.98%
B 19258 16951 576 576 2.99% 3.40%
C 19258 16953 97 97 0.50% 0.57%
D 19257 16947 13553 13553 70.38% 79.97%

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 15 32 3395618 7784.88 1776 1732 436.0
A 0 8 804536 1841.47 1776 1732 436.0
A 4 3 55510 123.36 1776 1732 436.0
B 4 81 1383169 3637.47 1779 1712 379.8
B 0 183 279075 730.32 1779 1712 379.8
B 5 236 158714 413.4 1779 1712 379.8
C 4 5 264810 528.08 1827 1812 498.0
C 6 223 247328 492.97 1827 1812 498.0
C 13 3 165135 327.94 1827 1812 498.0
D 15 94 34945434 151963.34 801 765 230.0
D 2 249 560302 2433.25 801 765 230.0
D 11 129 211856 917.97 801 765 230.0

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