ASTROSAT CZTI

Data Quality Report

Orbit 43763

Creation date: 2024-06-27T22:55:28.893312
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_026T01_9000005904_43763cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43763cztM0_level2_quad_clean.evt
Size (bytes)574,810,560107,720,640
Size548.2 MB 102.7 MB
Events in quadrant A5,001,150755,480
Events in quadrant B6,320,952693,535
Events in quadrant C4,241,865736,168
Events in quadrant D5,242,327652,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197041
B0229252
C0164961
D0196901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60852924.798685%
B6085102916.910435%
C60853716.096960%
D60856029.893180%

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 7290 6086 120 120 1.65% 1.97%
B 7290 6086 764 764 10.48% 12.55%
C 7290 6086 283 283 3.88% 4.65%
D 7290 6086 348 348 4.77% 5.72%

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 901749 5765.1 761 747 156.3
A 15 223 492624 3147.3 761 747 156.3
A 14 63 238322 1520.13 761 747 156.3
B 0 200 1940386 13769.03 724 705 140.9
B 5 235 885897 6283.63 724 705 140.9
B 5 255 174289 1232.2 724 705 140.9
C 15 158 1136542 6662.53 731 738 170.5
C 14 254 135112 788.23 731 738 170.5
C 15 157 45055 259.96 731 738 170.5
D 4 212 723119 3961.84 727 707 182.3
D 5 235 464296 2542.41 727 707 182.3
D 13 249 123312 672.39 727 707 182.3

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