ASTROSAT CZTI

Data Quality Report

Orbit 42652

Creation date: 2024-06-27T22:42:39.606239
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_174T01_9000005820_42652cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42652cztM0_level2_quad_clean.evt
Size (bytes)377,000,64088,758,720
Size359.5 MB 84.6 MB
Events in quadrant A2,950,308603,836
Events in quadrant B2,867,651609,427
Events in quadrant C2,727,330601,030
Events in quadrant D4,977,759484,962

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119852
B0122812
C0114962
D0186482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A554870.126172%
B55481292.325162%
C5548300.540735%
D554880714.545782%

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 7071 5549 2 2 0.03% 0.04%
B 7071 5549 103 103 1.46% 1.86%
C 7071 5549 24 24 0.34% 0.43%
D 7071 5549 777 777 10.99% 14.00%

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 10 83 559871 4407.44 613 600 126.9
A 7 3 13490 101.58 613 600 126.9
A 13 254 7686 55.84 613 600 126.9
B 10 246 240880 2062.65 600 583 116.5
B 0 229 189126 1618.41 600 583 116.5
B 3 112 38701 327.2 600 583 116.5
C 15 214 230808 1635.81 601 604 140.7
C 14 254 86968 613.69 601 604 140.7
C 15 111 36370 254.15 601 604 140.7
D 12 233 1924987 13937.15 563 548 138.1
D 12 6 214424 1548.93 563 548 138.1
D 2 249 203462 1469.54 563 548 138.1

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