ASTROSAT CZTI

Data Quality Report

Orbit 43809

Creation date: 2024-06-27T22:56:02.263985
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_018T01_9000005906_43809cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43809cztM0_level2_quad_clean.evt
Size (bytes)676,321,92091,160,640
Size645.0 MB 86.9 MB
Events in quadrant A5,727,395607,095
Events in quadrant B4,327,897695,991
Events in quadrant C9,209,876448,984
Events in quadrant D5,308,944592,719

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021482161
B01678662
C031695245
D01985371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01190
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A595196516.215762%
B59554257.136860%
C5937244141.115041%
D596262310.449514%

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 7040 5973 567 567 8.05% 9.49%
B 7040 5981 238 238 3.38% 3.98%
C 7040 5968 2176 2176 30.91% 36.46%
D 7041 5980 374 374 5.31% 6.25%

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 15 223 1778831 12753.89 677 664 139.4
A 10 83 854130 6121.48 677 664 139.4
A 7 32 319477 2286.68 677 664 139.4
B 0 200 979111 7113.15 704 686 137.6
B 5 235 213380 1546.29 704 686 137.6
B 4 170 79246 571.13 704 686 137.6
C 15 174 4776085 36723.81 558 560 130.0
C 14 254 1229021 9446.87 558 560 130.0
C 3 233 497403 3820.72 558 560 130.0
D 5 235 489674 2849.48 680 659 171.6
D 12 33 407534 2370.85 680 659 171.6
D 12 128 394045 2292.25 680 659 171.6

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