ASTROSAT CZTI

Data Quality Report

Orbit 41517

Creation date: 2024-06-27T22:29:59.114011
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_035T02_9000005676_41517cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41517cztM0_level2_quad_clean.evt
Size (bytes)318,654,72090,262,080
Size303.9 MB 86.1 MB
Events in quadrant A2,814,882635,218
Events in quadrant B2,954,882617,349
Events in quadrant C2,978,214575,919
Events in quadrant D2,661,061557,019

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113723
B0119832
C0117232
D0111952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4957210.423643%
B49572404.841638%
C49572214.458342%
D4957841.694573%

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 6990 4958 8 8 0.11% 0.16%
B 6990 4958 191 191 2.73% 3.85%
C 6990 4958 218 218 3.12% 4.40%
D 6990 4958 76 76 1.09% 1.53%

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 498194 4115.8 589 577 120.9
A 13 248 14630 116.23 589 577 120.9
A 2 79 13547 107.28 589 577 120.9
B 0 186 455048 4192.73 575 560 108.4
B 0 190 94481 866.44 575 560 108.4
B 0 245 78232 716.54 575 560 108.4
C 0 10 574810 4521.32 550 555 127.0
C 15 214 200438 1573.75 550 555 127.0
C 14 254 31806 246.05 550 555 127.0
D 1 47 141216 1014.82 567 552 138.6
D 12 233 96485 692.11 567 552 138.6
D 2 249 63380 453.27 567 552 138.6

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