ASTROSAT CZTI

Data Quality Report

Orbit 24747

Creation date: 2024-06-27T19:09:26.601058
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/AS1A07_018T08_9000003622_24747cztM0_level2.evt modeM0/AS1A07_018T08_9000003622_24747cztM0_level2_quad_clean.evt
Size (bytes)451,019,52095,610,240
Size430.1 MB 91.2 MB
Events in quadrant A3,056,259619,487
Events in quadrant B3,238,286629,360
Events in quadrant C3,306,086603,272
Events in quadrant D3,612,639585,829

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133961
B0138061
C0141441
D0152491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6558220.335468%
B6558450.686185%
C6558731.113144%
D6558560.853919%

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 7578 6559 0 0 0.00% 0.00%
B 7578 6559 5 5 0.07% 0.08%
C 7578 6559 0 0 0.00% 0.00%
D 7578 6559 36 36 0.48% 0.55%

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 13 254 11959 69.73 792 777 160.4
A 3 137 7171 39.87 792 777 160.4
A 0 226 6717 37.04 792 777 160.4
B 0 189 54594 357.45 793 772 150.6
B 4 173 23940 153.87 793 772 150.6
B 12 111 18929 120.59 793 772 150.6
C 10 91 182023 1016.08 762 764 178.4
C 14 238 120223 669.65 762 764 178.4
C 1 90 20581 111.09 762 764 178.4
D 1 52 358948 1934.21 764 744 185.2
D 8 195 331416 1785.54 764 744 185.2
D 2 234 27162 142.65 764 744 185.2

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