ASTROSAT CZTI

Data Quality Report

Orbit 20160617_G05_172T01_9000000502_level2

Creation date: 2025-10-30T23:36:56.421516
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_172T01_9000000502cztM0_level2.fits modeM0/AS1G05_172T01_9000000502cztM0_level2_quad_clean.evt
Size (bytes)1,923,045,1202,088,771,840
Size1.8 GB 1.9 GB
Events in quadrant A11,458,04412,643,314
Events in quadrant B11,149,11612,755,609
Events in quadrant C11,427,39212,305,096
Events in quadrant D9,581,04010,942,096

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043400
B043400
C043380
D043340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03070
B03070
C03070
D03080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04725520
B04773600
C04380800
D05559280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21341844562.087921%
B21341535971.685449%
C21341016830.788623%
D213373105954.965483%

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 245172 213485 0 0 0.00% 0.00%
B 245172 213501 0 0 0.00% 0.00%
C 245172 213504 0 0 0.00% 0.00%
D 245172 213415 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 11247 11.02 2981 2787 767.9
A 7 110 9669 8.96 2981 2787 767.9
A 0 30 8723 7.73 2981 2787 767.9
B 2 9 9646 11.73 2947 2803 583.5
B 12 226 8220 9.28 2947 2803 583.5
B 14 254 7759 8.49 2947 2803 583.5
C 1 80 8147 6.69 3019 2789 800.5
C 1 81 7974 6.48 3019 2789 800.5
C 2 191 7708 6.15 3019 2789 800.5
D 11 82 8363 8.0 2740 2481 735.2
D 3 14 7347 6.62 2740 2481 735.2
D 6 83 7087 6.27 2740 2481 735.2

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