ASTROSAT CZTI

Data Quality Report

Orbit 20200325_A07_047T08_9000003590_level2

Creation date: 2025-12-10T08:16:29.177206
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/AS1A07_047T08_9000003590cztM0_level2.fits modeM0/AS1A07_047T08_9000003590cztM0_level2_quad_clean.evt
Size (bytes)475,338,240502,539,840
Size453.3 MB 479.3 MB
Events in quadrant A2,991,5923,197,926
Events in quadrant B2,864,1483,208,986
Events in quadrant C2,900,2423,002,497
Events in quadrant D2,471,7602,641,823

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09380
B09380
C09380
D09380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01010
B01010
C01010
D01010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0953420
B0980380
C01191660
D01588930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A461533190.691179%
B461535541.200355%
C461539201.993370%
D4615330976.710290%

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 56227 46145 0 0 0.00% 0.00%
B 56228 46146 0 0 0.00% 0.00%
C 56228 46145 0 0 0.00% 0.00%
D 56228 46132 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 2771 10.78 779 741 188.4
A 7 110 2395 8.78 779 741 188.4
A 0 30 2217 7.84 779 741 188.4
B 2 9 2321 10.92 758 730 145.7
B 2 8 1924 8.19 758 730 145.7
B 3 80 1877 7.87 758 730 145.7
C 1 80 2261 8.0 766 726 191.8
C 1 81 2253 7.96 766 726 191.8
C 12 241 1975 6.51 766 726 191.8
D 3 14 1812 6.23 706 646 187.2
D 7 3 1790 6.11 706 646 187.2
D 10 189 1773 6.02 706 646 187.2

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