ASTROSAT CZTI

Data Quality Report

Orbit 41497

Creation date: 2024-06-27T22:29:47.643207
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_035T02_9000005676_41497cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41497cztM0_level2_quad_clean.evt
Size (bytes)1,107,809,280238,135,680
Size1.0 GB 227.1 MB
Events in quadrant A8,234,7501,656,565
Events in quadrant B7,030,6661,698,389
Events in quadrant C8,293,9101,602,876
Events in quadrant D16,253,4631,188,145

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332445
B0315244
C0342664
D0588414

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15419620.402101%
B15419290.188080%
C154193892.522861%
D15419330221.415137%

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 20882 15423 43 43 0.21% 0.28%
B 20882 15423 10 10 0.05% 0.06%
C 20882 15423 369 369 1.77% 2.39%
D 20882 15423 3048 3048 14.60% 19.76%

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 1351418 3896.48 1705 1668 346.4
A 13 248 200574 574.21 1705 1668 346.4
A 2 79 80021 226.19 1705 1668 346.4
B 0 190 231501 702.03 1688 1640 327.4
B 15 35 63619 189.29 1688 1640 327.4
B 0 245 52967 156.76 1688 1640 327.4
C 0 10 961060 2533.19 1640 1652 378.7
C 15 214 638301 1680.99 1640 1652 378.7
C 14 254 135441 353.25 1640 1652 378.7
D 12 16 7681790 20675.28 1527 1488 371.5
D 12 79 1450359 3900.34 1527 1488 371.5
D 12 128 268592 719.04 1527 1488 371.5

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