ASTROSAT CZTI

Data Quality Report

Orbit 42596

Creation date: 2024-06-27T22:42:00.599235
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/AS1A12_061T07_9000005818_42596cztM0_level2.fits modeM0/AS1A12_061T07_9000005818_42596cztM0_level2_quad_clean.evt
Size (bytes)413,412,48092,969,280
Size394.3 MB 88.7 MB
Events in quadrant A3,189,224637,332
Events in quadrant B2,774,977645,708
Events in quadrant C2,868,460626,255
Events in quadrant D6,006,519489,398

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129422
B0124412
C0123132
D0219964

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5962150.251593%
B5962300.503187%
C5962110.184502%
D5961101316.993793%

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 7275 5963 4 4 0.05% 0.07%
B 7275 5963 18 18 0.25% 0.30%
C 7275 5963 6 6 0.08% 0.10%
D 7273 5961 904 904 12.43% 15.17%

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 637227 4774.43 645 631 133.3
A 13 248 39254 289.67 645 631 133.3
A 3 137 7356 50.44 645 631 133.3
B 0 245 104132 819.06 641 623 126.4
B 15 85 38085 296.43 641 623 126.4
B 5 255 32731 254.07 641 623 126.4
C 15 214 251662 1698.53 631 633 147.8
C 4 254 116156 781.66 631 633 147.8
C 8 95 20714 135.87 631 633 147.8
D 2 249 3082659 21429.46 583 566 143.8
D 12 233 319700 2218.9 583 566 143.8
D 1 52 130275 901.85 583 566 143.8

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