ASTROSAT CZTI

Data Quality Report

Orbit 42981

Creation date: 2024-06-27T22:46:31.443411
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/AS1T05_148T01_9000005838_42981cztM0_level2.fits modeM0/AS1T05_148T01_9000005838_42981cztM0_level2_quad_clean.evt
Size (bytes)414,014,400111,006,720
Size394.8 MB 105.9 MB
Events in quadrant A3,392,321819,291
Events in quadrant B4,263,302755,894
Events in quadrant C2,675,114796,703
Events in quadrant D4,607,862640,643

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134261
B0160541
C0107941
D0170151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49751362.733668%
B49764889.807074%
C497650.100482%
D497663212.700965%

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 7037 4976 104 104 1.48% 2.09%
B 7038 4977 412 412 5.85% 8.28%
C 7038 4977 1 1 0.01% 0.02%
D 7038 4977 569 569 8.08% 11.43%

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 511280 3412.66 650 636 149.6
A 15 237 315713 2105.68 650 636 149.6
A 15 222 21993 142.73 650 636 149.6
B 4 171 1066958 8081.3 614 602 132.0
B 4 81 581219 4400.16 614 602 132.0
B 0 186 127734 963.46 614 602 132.0
C 15 214 198947 1215.34 629 632 163.2
C 14 254 16622 97.99 629 632 163.2
C 7 220 6915 38.5 629 632 163.2
D 13 249 1241146 7774.25 590 570 159.6
D 10 118 694500 4348.62 590 570 159.6
D 1 52 159383 995.23 590 570 159.6

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