ASTROSAT CZTI

Data Quality Report

Orbit 46201

Creation date: 2024-06-27T23:20:20.692570
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/AS1A13_093T40_9000006182_46201cztM0_level2.fits modeM0/AS1A13_093T40_9000006182_46201cztM0_level2_quad_clean.evt
Size (bytes)484,312,320108,083,520
Size461.9 MB 103.1 MB
Events in quadrant A7,012,206704,031
Events in quadrant B3,669,408750,613
Events in quadrant C3,053,113714,942
Events in quadrant D3,686,442648,522

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251373
B0150482
C0139142
D0155682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65255328.153257%
B65251862.850575%
C6525590.904215%
D65251872.865900%

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 7545 6526 307 307 4.07% 4.70%
B 7545 6526 49 49 0.65% 0.75%
C 7545 6526 34 34 0.45% 0.52%
D 7545 6526 157 157 2.08% 2.41%

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 3157713 21182.87 723 709 149.0
A 0 247 922729 6186.57 723 709 149.0
A 0 226 56409 373.73 723 709 149.0
B 3 112 447673 3175.49 727 706 140.8
B 5 172 258704 1832.96 727 706 140.8
B 10 246 56435 395.93 727 706 140.8
C 12 2 176747 1058.53 712 714 166.3
C 2 14 55273 328.08 712 714 166.3
C 14 254 46369 274.53 712 714 166.3
D 2 249 376572 2138.96 705 684 175.7
D 13 249 344958 1959.06 705 684 175.7
D 1 52 99604 562.9 705 684 175.7

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