ASTROSAT CZTI

Data Quality Report

Orbit 20190603_A05_064T01_9000002964_level2

Creation date: 2025-12-01T05:36:08.124987
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/AS1A05_064T01_9000002964cztM0_level2.fits modeM0/AS1A05_064T01_9000002964cztM0_level2_quad_clean.evt
Size (bytes)1,196,562,2401,370,096,640
Size1.1 GB 1.3 GB
Events in quadrant A7,512,6129,022,067
Events in quadrant B7,134,3768,973,531
Events in quadrant C7,250,9868,419,973
Events in quadrant D5,418,3686,177,905

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02710980
B03118360
C03738110
D05628700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026540
B026540
C026540
D026540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02030
B02030
C02030
D02030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12988712150.935428%
B12988722291.716107%
C12988794477.273245%
D1298873467626.697052%

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 150447 129868 0 0 0.00% 0.00%
B 150447 129868 0 0 0.00% 0.00%
C 150447 129836 0 0 0.00% 0.00%
D 150447 128200 0 0 0.00% 0.00%

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 29 7342 11.62 1957 1848 472.7
A 7 110 6041 8.87 1957 1848 472.7
A 0 30 5858 8.48 1957 1848 472.7
B 3 17 4775 8.15 1898 1817 362.8
B 5 128 4759 8.11 1898 1817 362.8
B 14 254 4721 8.0 1898 1817 362.8
C 12 241 5228 7.01 1916 1798 489.6
C 2 191 4934 6.41 1916 1798 489.6
C 3 126 4864 6.26 1916 1798 489.6
D 3 14 4008 6.32 1553 1420 409.6
D 10 189 4002 6.3 1553 1420 409.6
D 15 46 3884 6.01 1553 1420 409.6

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