ASTROSAT CZTI

Data Quality Report

Orbit 41935

Creation date: 2024-06-27T22:34:41.004533
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_099T03_9000005720_41935cztM0_level2.fits modeM0/AS1A12_099T03_9000005720_41935cztM0_level2_quad_clean.evt
Size (bytes)592,894,08077,230,080
Size565.4 MB 73.7 MB
Events in quadrant A3,335,374602,540
Events in quadrant B2,825,513620,404
Events in quadrant C3,338,112554,747
Events in quadrant D12,027,182181,328

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132412
B0120232
C0131192
D0393677

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5412731.348854%
B5412530.979305%
C54122735.044346%
D5411386571.428571%

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 7145 5413 38 38 0.53% 0.70%
B 7145 5413 37 37 0.52% 0.68%
C 7145 5413 259 259 3.62% 4.78%
D 7144 5412 3873 3873 54.21% 71.56%

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 523991 4333.57 592 581 120.8
A 14 24 503789 4166.31 592 581 120.8
A 13 6 12089 95.28 592 581 120.8
B 0 229 456169 3996.91 590 573 114.0
B 5 255 34221 295.19 590 573 114.0
B 12 111 14732 124.22 590 573 114.0
C 0 10 784779 6001.38 561 563 130.7
C 15 214 210486 1606.48 561 563 130.7
C 4 254 114407 871.22 561 563 130.7
D 12 79 10109636 107651.0 378 367 93.9
D 13 249 280524 2983.32 378 367 93.9
D 12 6 38844 409.73 378 367 93.9

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