ASTROSAT CZTI

Data Quality Report

Orbit 20862

Creation date: 2024-06-27T18:20:29.397521
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_160T01_9000003078_20862cztM0_level2.evt modeM0/AS1A05_160T01_9000003078_20862cztM0_level2_quad_clean.evt
Size (bytes)763,315,20083,082,240
Size728.0 MB 79.2 MB
Events in quadrant A3,763,099531,876
Events in quadrant B3,894,729543,032
Events in quadrant C3,848,755501,544
Events in quadrant D11,090,737404,009

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160243
B0162133
C0161513
D0383075

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76791612.096627%
B76791922.500326%
C76802092.721354%
D7679203426.487824%

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 8579 7682 0 0 0.00% 0.00%
B 8579 7682 8 8 0.09% 0.10%
C 8580 7683 0 0 0.00% 0.00%
D 8579 7682 1952 1952 22.75% 25.41%

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 13451 63.58 973 949 196.6
A 5 16 10822 50.21 973 949 196.6
A 3 137 8521 38.51 973 949 196.6
B 0 189 52065 272.43 968 944 187.6
B 12 111 23001 117.55 968 944 187.6
B 0 229 21757 110.92 968 944 187.6
C 14 238 143866 666.03 918 923 214.6
C 3 233 110488 510.51 918 923 214.6
C 7 247 6784 27.31 918 923 214.6
D 1 52 4000529 19446.36 845 818 205.7
D 1 239 3246373 15779.7 845 818 205.7
D 1 20 366303 1776.97 845 818 205.7

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