ASTROSAT CZTI

Data Quality Report

Orbit 38012

Creation date: 2024-06-27T21:47:18.019221
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/AS1A11_082T01_9000005356_38012cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_38012cztM0_level2_quad_clean.evt
Size (bytes)358,761,60099,959,040
Size342.1 MB 95.3 MB
Events in quadrant A2,900,507684,289
Events in quadrant B2,702,247712,290
Events in quadrant C2,842,818684,816
Events in quadrant D4,437,213587,978

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115203
B0109272
C0112232
D0165772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5108120.234926%
B5108270.528583%
C5108190.371966%
D51083767.361002%

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 7141 5109 3 3 0.04% 0.06%
B 7141 5109 12 12 0.17% 0.23%
C 7141 5109 10 10 0.14% 0.20%
D 7141 5109 339 339 4.75% 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 10 83 359876 2838.5 634 623 126.6
A 12 16 54651 426.88 634 623 126.6
A 12 194 11419 85.3 634 623 126.6
B 5 255 73938 618.59 637 622 118.5
B 0 230 28141 232.18 637 622 118.5
B 0 155 17759 144.59 637 622 118.5
C 15 214 217464 1503.52 632 637 144.2
C 15 159 70630 485.34 632 637 144.2
C 14 254 47261 323.3 632 637 144.2
D 13 171 991588 6829.42 608 593 145.1
D 12 227 474837 3268.24 608 593 145.1
D 7 223 206264 1417.38 608 593 145.1

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