ASTROSAT CZTI

Data Quality Report

Orbit 04022

Creation date: 2024-06-27T14:36:26.589661
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_173T01_9000000514_04022cztM0_level2.evt modeM0/AS1G05_173T01_9000000514_04022cztM0_level2_quad_clean.evt
Size (bytes)401,281,92069,851,520
Size382.7 MB 66.6 MB
Events in quadrant A3,043,330424,187
Events in quadrant B3,051,757431,231
Events in quadrant C2,768,545420,103
Events in quadrant D2,864,250403,600

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133072
B0131851
C0126411
D0130961

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6248330.528169%
B6248230.368118%
C624840.064020%
D6248110.176056%

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 7488 6249 16 16 0.21% 0.26%
B 7488 6248 3 3 0.04% 0.05%
C 7488 6249 0 0 0.00% 0.00%
D 7488 6249 3 3 0.04% 0.05%

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 50 172533 1150.07 734 719 149.4
A 0 118 25896 168.53 734 719 149.4
A 8 15 12060 75.91 734 719 149.4
B 4 81 89309 623.67 744 728 142.0
B 15 204 28008 192.07 744 728 142.0
B 0 183 18077 122.14 744 728 142.0
C 12 4 7996 44.58 704 706 163.5
C 9 144 7509 41.6 704 706 163.5
C 13 61 6071 32.81 704 706 163.5
D 2 232 62516 368.8 697 677 167.7
D 10 246 56207 331.17 697 677 167.7
D 2 14 25498 148.03 697 677 167.7

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