ASTROSAT CZTI

Data Quality Report

Orbit 13834

Creation date: 2024-06-27T16:46:41.554267
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/AS1A04_199T01_9000002040_13834cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13834cztM0_level2_quad_clean.evt
Size (bytes)500,224,32087,264,000
Size477.1 MB 83.2 MB
Events in quadrant A3,142,472557,961
Events in quadrant B3,279,559565,853
Events in quadrant C3,039,031556,576
Events in quadrant D5,250,321512,007

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135553
B0139282
C0132492
D0199092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6448661.023573%
B6448881.364764%
C6448280.434243%
D64485047.816377%

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 7539 6449 18 18 0.24% 0.28%
B 7539 6449 28 28 0.37% 0.43%
C 7539 6449 0 0 0.00% 0.00%
D 7539 6449 428 428 5.68% 6.64%

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 0 23 116802 728.95 777 760 159.2
A 9 143 21463 130.05 777 760 159.2
A 0 226 14625 87.1 777 760 159.2
B 3 64 101927 683.02 778 761 148.1
B 10 245 43027 285.36 778 761 148.1
B 4 80 40200 266.27 778 761 148.1
C 3 233 78232 437.37 759 763 177.1
C 13 61 5440 26.41 759 763 177.1
C 3 202 1812 5.92 759 763 177.1
D 5 222 1332614 7451.86 738 716 178.7
D 1 52 528292 2951.74 738 716 178.7
D 13 122 491117 2743.75 738 716 178.7

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