ASTROSAT CZTI

Data Quality Report

Orbit 25494

Creation date: 2024-06-27T19:18:18.804636
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/AS1A08_003T17_9000003720_25494cztM0_level2.evt modeM0/AS1A08_003T17_9000003720_25494cztM0_level2_quad_clean.evt
Size (bytes)398,122,56053,386,560
Size379.7 MB 50.9 MB
Events in quadrant A2,308,032339,803
Events in quadrant B4,087,044313,452
Events in quadrant C2,303,767325,897
Events in quadrant D3,046,440315,034

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096710
B0151580
C096750
D0120160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A45851322.878953%
B458574716.292257%
C45851583.446020%
D45842174.733857%

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 4920 4586 0 0 0.00% 0.00%
B 4920 4586 356 356 7.24% 7.76%
C 4920 4586 0 0 0.00% 0.00%
D 4919 4585 86 86 1.75% 1.88%

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 13 254 6668 49.6 595 581 122.7
A 11 208 6228 46.01 595 581 122.7
A 3 137 5580 40.73 595 581 122.7
B 3 64 1884429 17375.91 549 535 108.4
B 0 190 16591 148.09 549 535 108.4
B 0 245 14976 133.2 549 535 108.4
C 14 238 90403 663.31 566 569 135.4
C 13 61 3926 24.78 566 569 135.4
C 2 16 3088 18.6 566 569 135.4
D 12 233 312493 2203.01 573 557 141.6
D 1 52 281645 1985.15 573 557 141.6
D 8 195 194283 1368.17 573 557 141.6

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