ASTROSAT CZTI

Data Quality Report

Orbit 41702

Creation date: 2024-06-27T22:31:48.255938
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_077T12_9000005692_41702cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41702cztM0_level2_quad_clean.evt
Size (bytes)308,018,88087,575,040
Size293.7 MB 83.5 MB
Events in quadrant A2,928,323592,851
Events in quadrant B2,394,856612,196
Events in quadrant C2,767,737558,156
Events in quadrant D2,900,728520,490

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119102
B0105852
C0114732
D0122812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5260190.361217%
B526090.171103%
C52601132.148289%
D52591292.452938%

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 6994 5261 5 5 0.07% 0.10%
B 6994 5261 0 0 0.00% 0.00%
C 6994 5261 107 107 1.53% 2.03%
D 6993 5260 116 116 1.66% 2.21%

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 501539 4053.86 599 587 123.6
A 9 240 99401 799.63 599 587 123.6
A 3 137 6683 49.33 599 587 123.6
B 0 245 47127 400.37 594 576 116.3
B 12 111 14941 123.55 594 576 116.3
B 11 111 14129 116.56 594 576 116.3
C 0 10 306194 2260.95 575 577 135.2
C 15 214 217184 1602.45 575 577 135.2
C 13 61 3921 24.74 575 577 135.2
D 2 249 291761 2040.92 577 562 142.7
D 13 249 206237 1441.51 577 562 142.7
D 2 120 151565 1058.33 577 562 142.7

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