ASTROSAT CZTI

Data Quality Report

Orbit 33527

Creation date: 2024-06-27T20:49:46.857248
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/AS1A11_037T01_9000004806_33527cztM0_level2.evt modeM0/AS1A11_037T01_9000004806_33527cztM0_level2_quad_clean.evt
Size (bytes)476,861,76083,355,840
Size454.8 MB 79.5 MB
Events in quadrant A2,203,746557,139
Events in quadrant B3,239,542564,523
Events in quadrant C3,037,171556,852
Events in quadrant D5,629,632502,582

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098202
B0127821
C0119351
D0200101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A488940.081816%
B48891613.293107%
C4889881.799959%
D488984517.283698%

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 6893 4890 0 0 0.00% 0.00%
B 6893 4890 129 129 1.87% 2.64%
C 6893 4890 72 72 1.04% 1.47%
D 6893 4890 813 813 11.79% 16.63%

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 9849 82.15 567 555 113.1
A 7 191 5809 46.44 567 555 113.1
A 3 137 5121 40.36 567 555 113.1
B 5 172 489684 4587.97 563 548 106.6
B 5 255 180773 1690.46 563 548 106.6
B 0 213 178259 1666.88 563 548 106.6
C 1 23 238012 1855.08 558 561 128.0
C 15 214 225470 1757.09 558 561 128.0
C 3 233 154452 1202.27 558 561 128.0
D 2 250 1567716 11653.3 514 503 134.5
D 8 195 1203597 8945.83 514 503 134.5
D 13 249 347667 2581.4 514 503 134.5

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