ASTROSAT CZTI

Data Quality Report

Orbit 41196

Creation date: 2024-06-27T22:25:40.846802
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_101T02_9000005622_41196cztM0_level2.fits modeM0/AS1A12_101T02_9000005622_41196cztM0_level2_quad_clean.evt
Size (bytes)326,093,76086,299,200
Size311.0 MB 82.3 MB
Events in quadrant A2,798,358579,549
Events in quadrant B2,486,248595,956
Events in quadrant C3,629,300537,405
Events in quadrant D2,737,224523,133

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116143
B0111422
C0143612
D0123592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A538370.130039%
B5383130.241501%
C53833907.245031%
D5383971.801969%

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 7117 5384 3 3 0.04% 0.06%
B 7117 5384 6 6 0.08% 0.11%
C 7117 5384 363 363 5.10% 6.74%
D 7117 5383 88 88 1.24% 1.63%

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 10 83 521602 4405.4 571 559 118.3
A 2 79 25391 209.95 571 559 118.3
A 12 189 24339 201.06 571 559 118.3
B 0 229 126585 1144.52 568 554 110.1
B 5 255 60302 542.59 568 554 110.1
B 5 185 36219 323.88 568 554 110.1
C 9 54 813222 6507.15 535 537 124.9
C 0 10 500519 4003.34 535 537 124.9
C 15 214 226603 1810.11 535 537 124.9
D 2 249 451234 3341.38 550 535 134.9
D 13 249 131355 969.87 550 535 134.9
D 2 234 27299 198.42 550 535 134.9

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