ASTROSAT CZTI

Data Quality Report

Orbit 04535

Creation date: 2024-06-27T14:43:27.444785
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/AS1G05_250T01_9000000568_04535cztM0_level2.evt modeM0/AS1G05_250T01_9000000568_04535cztM0_level2_quad_clean.evt
Size (bytes)1,865,816,640274,466,880
Size1.7 GB 261.8 MB
Events in quadrant A20,066,9021,568,558
Events in quadrant B11,132,5121,742,324
Events in quadrant C10,576,4051,709,525
Events in quadrant D13,131,5881,662,215

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0756287
B0494786
C0490008
D0562256

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04800
B04800
C04800
D04800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23666391216.530043%
B236667032.970506%
C236655732.421297%
D236667783.287417%

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 25396 23671 2055 2055 8.09% 8.68%
B 25396 23674 10 10 0.04% 0.04%
C 25396 23674 9 9 0.04% 0.04%
D 25396 23674 227 227 0.89% 0.96%

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 13 6885767 13418.21 2520 2456 513.0
A 13 251 3146179 6128.32 2520 2456 513.0
A 8 15 198209 381.6 2520 2456 513.0
B 15 204 130854 246.83 2742 2673 519.3
B 4 80 127703 240.76 2742 2673 519.3
B 7 252 87108 162.59 2742 2673 519.3
C 1 3 123677 198.83 2646 2650 608.7
C 8 128 28222 42.01 2646 2650 608.7
C 9 54 25345 37.28 2646 2650 608.7
D 1 20 1146950 1636.81 2605 2544 699.2
D 13 235 828267 1181.01 2605 2544 699.2
D 7 67 357052 507.04 2605 2544 699.2

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