ASTROSAT CZTI

Data Quality Report

Orbit 42157

Creation date: 2024-06-27T22:37:36.075984
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_088T23_9000005762_42157cztM0_level2.fits modeM0/AS1A12_088T23_9000005762_42157cztM0_level2_quad_clean.evt
Size (bytes)315,273,60082,627,200
Size300.7 MB 78.8 MB
Events in quadrant A3,006,590553,230
Events in quadrant B2,525,244573,833
Events in quadrant C2,267,868546,421
Events in quadrant D3,486,825482,588

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120292
B0109662
C099322
D0138042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4926470.954121%
B4926290.588713%
C492640.081202%
D49262244.547300%

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 7049 4927 44 44 0.62% 0.89%
B 7049 4927 16 16 0.23% 0.32%
C 7049 4927 0 0 0.00% 0.00%
D 7049 4927 199 199 2.82% 4.04%

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 523147 4735.33 534 524 110.4
A 15 222 221244 1999.88 534 524 110.4
A 15 223 134584 1214.68 534 524 110.4
B 15 33 113709 1073.46 538 523 105.4
B 5 255 85189 802.97 538 523 105.4
B 4 171 69875 657.73 538 523 105.4
C 15 214 204626 1651.82 527 532 123.6
C 12 249 6953 51.97 527 532 123.6
C 13 61 3496 23.99 527 532 123.6
D 12 6 567987 4516.82 510 495 125.6
D 1 52 370954 2948.58 510 495 125.6
D 6 252 222657 1768.25 510 495 125.6

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