ASTROSAT CZTI

Data Quality Report

Orbit 16558

Creation date: 2024-06-27T17:24:22.758554
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_018T01_9000002442_16558cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16558cztM0_level2_quad_clean.evt
Size (bytes)497,954,88089,631,360
Size474.9 MB 85.5 MB
Events in quadrant A3,079,823586,120
Events in quadrant B3,742,137607,231
Events in quadrant C3,781,905578,881
Events in quadrant D4,057,828511,130

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129573
B0149022
C0153602
D0161932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6170370.599676%
B61701572.544571%
C61701352.188006%
D61704647.520259%

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 7506 6172 2 2 0.03% 0.03%
B 7506 6172 99 99 1.32% 1.60%
C 7506 6172 7 7 0.09% 0.11%
D 7506 6172 158 158 2.10% 2.56%

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 14118 83.34 793 779 160.1
A 15 223 10423 60.26 793 779 160.1
A 0 226 7141 39.75 793 779 160.1
B 10 16 255870 1683.67 804 786 151.5
B 15 35 107019 701.19 804 786 151.5
B 7 220 64434 420.11 804 786 151.5
C 3 233 456012 2575.38 762 771 176.8
C 7 247 232908 1313.24 762 771 176.8
C 14 238 120310 676.25 762 771 176.8
D 5 222 522266 2919.55 727 703 178.6
D 7 38 299002 1669.79 727 703 178.6
D 1 52 292302 1632.28 727 703 178.6

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