ASTROSAT CZTI

Data Quality Report

Orbit 40733

Creation date: 2024-06-27T22:19:45.163799
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/AS1A12_066T01_9000005562_40733cztM0_level2.fits modeM0/AS1A12_066T01_9000005562_40733cztM0_level2_quad_clean.evt
Size (bytes)519,068,16082,152,000
Size495.0 MB 78.3 MB
Events in quadrant A3,091,662620,314
Events in quadrant B2,565,873630,134
Events in quadrant C6,805,757494,333
Events in quadrant D6,344,082375,571

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124323
B0110192
C0238632
D0223952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5233561.070132%
B5233310.592394%
C5233117322.415440%
D5233194137.091534%

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 7056 5234 46 46 0.65% 0.88%
B 7056 5234 8 8 0.11% 0.15%
C 7055 5232 1108 1108 15.71% 21.18%
D 7055 5232 1304 1304 18.48% 24.92%

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 498282 4037.96 600 588 123.3
A 13 248 239263 1936.45 600 588 123.3
A 12 189 18238 143.2 600 588 123.3
B 0 190 59913 513.34 598 582 115.6
B 4 170 56410 483.03 598 582 115.6
B 0 229 55082 471.54 598 582 115.6
C 9 187 4367330 34597.25 538 540 126.2
C 15 214 207671 1641.06 538 540 126.2
C 14 254 103003 811.79 538 540 126.2
D 1 47 3182531 26510.69 478 465 120.0
D 2 249 415491 3457.7 478 465 120.0
D 12 227 160570 1333.88 478 465 120.0

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