ASTROSAT CZTI

Data Quality Report

Orbit 29381

Creation date: 2024-06-27T20:03:40.116735
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/AS1T03_280T01_9000004222_29381cztM0_level2.evt modeM0/AS1T03_280T01_9000004222_29381cztM0_level2_quad_clean.evt
Size (bytes)522,817,92085,752,000
Size498.6 MB 81.8 MB
Events in quadrant A2,771,058569,838
Events in quadrant B3,007,683581,600
Events in quadrant C3,073,884557,039
Events in quadrant D6,592,331487,289

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118271
B0125841
C0125321
D0235001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5726140.244499%
B5726781.362207%
C5726781.362207%
D5726101117.656305%

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 6826 5727 0 0 0.00% 0.00%
B 6826 5727 32 32 0.47% 0.56%
C 6826 5727 0 0 0.00% 0.00%
D 6826 5727 887 887 12.99% 15.49%

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 13 254 11290 74.02 715 702 143.0
A 15 174 10159 66.12 715 702 143.0
A 3 137 6575 41.06 715 702 143.0
B 0 229 100394 737.75 712 696 135.1
B 5 255 82642 606.39 712 696 135.1
B 5 172 17977 127.88 712 696 135.1
C 3 233 203790 1230.72 700 705 165.0
C 14 238 114986 692.56 700 705 165.0
C 2 114 13608 78.19 700 705 165.0
D 12 33 2611542 16762.38 657 640 155.8
D 1 52 901109 5781.14 657 640 155.8
D 13 153 209362 1340.03 657 640 155.8

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