ASTROSAT CZTI

Data Quality Report

Orbit 16273

Creation date: 2024-06-27T17:20:12.503073
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_072T05_9000002394_16273cztM0_level2.evt modeM0/AS1A05_072T05_9000002394_16273cztM0_level2_quad_clean.evt
Size (bytes)534,556,80099,786,240
Size509.8 MB 95.2 MB
Events in quadrant A3,629,093632,615
Events in quadrant B4,331,247638,488
Events in quadrant C3,628,085629,379
Events in quadrant D4,111,086619,130

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154972
B0174441
C0153171
D0170601

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72071952.705703%
B72072673.704732%
C72071942.691827%
D72071522.109061%

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 7348 7209 11 11 0.15% 0.15%
B 7348 7209 33 33 0.45% 0.46%
C 7348 7209 1 1 0.01% 0.01%
D 7348 7208 54 54 0.73% 0.75%

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 9 143 95488 519.45 894 876 182.1
A 15 174 85489 464.55 894 876 182.1
A 13 248 9859 49.32 894 876 182.1
B 5 65 366143 2102.98 891 867 173.7
B 0 219 112723 643.98 891 867 173.7
B 4 216 81305 463.1 891 867 173.7
C 3 233 143736 713.11 853 859 200.4
C 14 238 132461 656.84 853 859 200.4
C 0 207 20894 100.0 853 859 200.4
D 1 52 566745 2508.62 859 838 225.6
D 10 70 225309 995.06 859 838 225.6
D 15 0 39464 171.22 859 838 225.6

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