ASTROSAT CZTI

Data Quality Report

Orbit 20985

Creation date: 2024-06-27T18:22:21.022177
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_133T01_9000003092_20985cztM0_level2.evt modeM0/AS1T03_133T01_9000003092_20985cztM0_level2_quad_clean.evt
Size (bytes)1,797,894,720294,886,080
Size1.7 GB 281.2 MB
Events in quadrant A11,498,2281,858,605
Events in quadrant B13,009,4321,862,608
Events in quadrant C11,572,3551,828,576
Events in quadrant D16,734,8361,715,579

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0503685
B0546125
C0499355
D0657546

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04920
B04920
C04920
D04920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A242162821.164519%
B242175752.374365%
C242173191.317256%
D2421613405.533532%

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 28321 24221 57 57 0.20% 0.24%
B 28322 24222 204 204 0.72% 0.84%
C 28322 24222 0 0 0.00% 0.00%
D 28321 24221 1129 1129 3.99% 4.66%

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 15 174 220487 371.47 2929 2863 585.9
A 0 226 25257 38.22 2929 2863 585.9
A 3 137 24601 37.1 2929 2863 585.9
B 7 220 680508 1225.6 2918 2843 552.9
B 0 182 586107 1054.87 2918 2843 552.9
B 0 197 129657 229.35 2918 2843 552.9
C 14 238 439370 655.65 2836 2856 665.8
C 7 247 52289 74.25 2836 2856 665.8
C 13 61 19882 25.57 2836 2856 665.8
D 1 52 5190265 7693.7 2803 2730 674.3
D 7 223 411565 606.35 2803 2730 674.3
D 1 20 124727 180.94 2803 2730 674.3

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