ASTROSAT CZTI

Data Quality Report

Orbit 38004

Creation date: 2024-06-27T21:47:13.522360
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/AS1A11_082T01_9000005356_38004cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_38004cztM0_level2_quad_clean.evt
Size (bytes)433,321,92099,887,040
Size413.2 MB 95.3 MB
Events in quadrant A4,154,198671,748
Events in quadrant B3,143,468687,270
Events in quadrant C2,953,178669,915
Events in quadrant D5,329,738581,957

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161493
B0131722
C0124452
D0199242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59171031.740747%
B5917751.267534%
C5917150.253507%
D59174497.588305%

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 7201 5918 56 56 0.78% 0.95%
B 7201 5918 52 52 0.72% 0.88%
C 7201 5918 12 12 0.17% 0.20%
D 7201 5918 416 416 5.78% 7.03%

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 15 222 902485 6589.48 668 655 136.9
A 10 83 419674 3061.68 668 655 136.9
A 12 16 176219 1282.81 668 655 136.9
B 4 171 143865 1124.28 667 649 127.4
B 5 172 116671 910.8 667 649 127.4
B 5 255 88599 690.43 667 649 127.4
C 15 214 250063 1610.7 654 657 154.8
C 14 254 110263 707.85 654 657 154.8
C 0 10 16020 99.22 654 657 154.8
D 1 52 1053302 6746.49 634 614 156.0
D 2 249 861572 5517.72 634 614 156.0
D 7 223 641962 4110.28 634 614 156.0

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