ASTROSAT CZTI

Data Quality Report

Orbit 15522

Creation date: 2024-06-27T17:09:48.987934
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/AS1T02_079T01_9000002298_15522cztM0_level2.evt modeM0/AS1T02_079T01_9000002298_15522cztM0_level2_quad_clean.evt
Size (bytes)335,018,88063,843,840
Size319.5 MB 60.9 MB
Events in quadrant A2,518,506410,114
Events in quadrant B2,294,968415,808
Events in quadrant C2,429,319400,169
Events in quadrant D2,598,454392,370

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102822
B095941
C098801
D0107781

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A44721583.533095%
B4472621.386404%
C4472902.012522%
D4472791.766547%

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 4823 4474 88 88 1.82% 1.97%
B 4823 4475 10 10 0.21% 0.22%
C 4823 4475 0 0 0.00% 0.00%
D 4823 4474 34 34 0.70% 0.76%

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 0 253 373631 3362.93 539 527 110.9
A 14 238 51265 457.32 539 527 110.9
A 14 237 14714 127.87 539 527 110.9
B 0 197 25854 239.42 544 531 105.8
B 0 182 23067 213.07 544 531 105.8
B 10 245 21792 201.02 544 531 105.8
C 3 233 311346 2547.9 517 519 122.0
C 14 238 80195 653.12 517 519 122.0
C 0 207 7755 59.31 517 519 122.0
D 12 221 333472 2557.55 526 510 130.2
D 7 38 123319 943.32 526 510 130.2
D 5 222 77672 592.7 526 510 130.2

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