ASTROSAT CZTI

Data Quality Report

Orbit 43517

Creation date: 2024-06-27T22:52:42.861815
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_018T01_9000005874_43517cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43517cztM0_level2_quad_clean.evt
Size (bytes)976,279,68055,759,680
Size931.1 MB 53.2 MB
Events in quadrant A10,643,667517,249
Events in quadrant B8,718,871647,057
Events in quadrant C13,601,122114,670
Events in quadrant D2,732,5644,068

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0355891
B0298411
C0442944
D0121151

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5687276348.584491%
B5688187432.946554%
C5687568599.964832%
D56875687100.000000%

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 6912 5688 2453 2453 35.49% 43.13%
B 6913 5689 1451 1451 20.99% 25.51%
C 6911 5686 5211 5211 75.40% 91.65%
D 6911 5686 25 25 0.36% 0.44%

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 15 223 3129373 30728.18 500 491 101.8
A 0 228 2589276 25423.99 500 491 101.8
A 14 235 1044605 10254.05 500 491 101.8
B 3 42 3439930 30550.03 595 580 112.6
B 3 25 1554507 13802.76 595 580 112.6
B 4 206 537462 4768.85 595 580 112.6
C 15 158 10105613 324102.2 125 125 31.2
C 15 191 1095165 35120.01 125 125 31.2
C 5 80 374698 12013.27 125 125 31.2
D 4 124 384323 48974.03 5 4 7.8
D 4 215 341080 43463.54 5 4 7.8
D 4 201 231712 29526.7 5 4 7.8

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