ASTROSAT CZTI

Data Quality Report

Orbit 43708

Creation date: 2024-06-27T22:54:48.707619
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_008T02_9000005900_43708cztM0_level2.fits modeM0/AS1A13_008T02_9000005900_43708cztM0_level2_quad_clean.evt
Size (bytes)699,304,320108,466,560
Size666.9 MB 103.4 MB
Events in quadrant A8,011,742731,196
Events in quadrant B4,005,646764,248
Events in quadrant C4,799,683727,193
Events in quadrant D8,552,477595,544

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285351
B0162761
C0187391
D0300961

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66874887.297742%
B66882834.231459%
C66883425.113636%
D6688120918.077153%

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 7503 6688 104 104 1.39% 1.56%
B 7504 6689 117 117 1.56% 1.75%
C 7504 6689 232 232 3.09% 3.47%
D 7504 6689 1052 1052 14.02% 15.73%

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 3203585 19753.12 781 765 162.1
A 10 83 865911 5335.71 781 765 162.1
A 14 63 629385 3876.96 781 765 162.1
B 5 235 467874 3025.34 782 761 154.4
B 12 32 116349 748.62 782 761 154.4
B 5 255 95995 616.8 782 761 154.4
C 15 157 1117832 6205.42 757 760 180.0
C 3 233 290473 1609.38 757 760 180.0
C 15 158 249116 1379.64 757 760 180.0
D 8 48 1636120 8354.89 736 713 195.7
D 12 33 1232744 6294.14 736 713 195.7
D 12 34 452682 2309.0 736 713 195.7

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