ASTROSAT CZTI

Data Quality Report

Orbit 29962

Creation date: 2024-06-27T20:09:14.134631
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/AS1A10_058T01_9000004298_29962cztM0_level2.evt modeM0/AS1A10_058T01_9000004298_29962cztM0_level2_quad_clean.evt
Size (bytes)814,861,440104,673,600
Size777.1 MB 99.8 MB
Events in quadrant A3,455,907726,265
Events in quadrant B5,775,187712,311
Events in quadrant C11,102,527606,021
Events in quadrant D3,921,330686,343

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140161
B0213381
C0373453
D0157991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6279911.449275%
B62801752.786624%
C6279317050.485746%
D6279661.051123%

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 7554 6280 24 24 0.32% 0.38%
B 7555 6281 70 70 0.93% 1.11%
C 7554 6280 2344 2344 31.03% 37.32%
D 7554 6280 19 19 0.25% 0.30%

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 12 96 114537 675.4 862 848 168.3
A 8 192 12546 69.5 862 848 168.3
A 13 254 12211 67.51 862 848 168.3
B 6 159 1785606 11519.12 833 814 154.9
B 6 36 706743 4556.09 833 814 154.9
B 12 111 17848 109.93 833 814 154.9
C 3 233 8114594 48284.54 732 740 168.0
C 14 238 117252 693.35 732 740 168.0
C 2 114 13015 73.05 732 740 168.0
D 7 80 310333 1586.47 841 823 195.1
D 8 195 295856 1512.27 841 823 195.1
D 12 233 88856 451.24 841 823 195.1

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