ASTROSAT CZTI

Data Quality Report

Orbit 34064

Creation date: 2024-06-27T20:56:06.497992
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/AS1C07_001T04_9000004868_34064cztM0_level2.evt modeM0/AS1C07_001T04_9000004868_34064cztM0_level2_quad_clean.evt
Size (bytes)638,242,56081,656,640
Size608.7 MB 77.9 MB
Events in quadrant A5,996,681497,950
Events in quadrant B5,367,288529,271
Events in quadrant C3,359,178545,554
Events in quadrant D4,231,636511,704

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213153
B0196192
C0132882
D0162712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5531149326.993310%
B553187315.783764%
C5531671.211354%
D55312905.243175%

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 7084 5532 1400 1400 19.76% 25.31%
B 7084 5532 755 755 10.66% 13.65%
C 7084 5532 52 52 0.73% 0.94%
D 7084 5532 298 298 4.21% 5.39%

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 15 169 3773563 33083.43 570 558 114.0
A 10 83 13733 115.52 570 558 114.0
A 13 254 8392 68.69 570 558 114.0
B 5 172 1252899 10913.73 602 586 114.7
B 5 31 722621 6292.43 602 586 114.7
B 5 15 606610 5281.41 602 586 114.7
C 3 233 289688 2051.27 614 619 140.9
C 0 10 277904 1967.65 614 619 140.9
C 15 214 244231 1728.7 614 619 140.9
D 8 195 468908 3135.36 608 589 149.4
D 2 250 458503 3065.7 608 589 149.4
D 10 118 433484 2898.2 608 589 149.4

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