ASTROSAT CZTI

Data Quality Report

Orbit 33784

Creation date: 2024-06-27T20:52:37.427490
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_086T01_9000004820_33784cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33784cztM0_level2_quad_clean.evt
Size (bytes)687,885,12056,183,040
Size656.0 MB 53.6 MB
Events in quadrant A3,571,419345,522
Events in quadrant B4,084,447332,237
Events in quadrant C3,714,834349,643
Events in quadrant D9,106,599303,821

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141253
B0155532
C0146392
D0307332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52791823.447623%
B52794368.259140%
C52791522.879333%
D5279165131.274863%

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 7282 5280 139 139 1.91% 2.63%
B 7282 5280 339 339 4.66% 6.42%
C 7282 5280 104 104 1.43% 1.97%
D 7282 5280 1708 1708 23.46% 32.35%

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 15 237 721319 5189.04 701 691 138.9
A 15 169 105815 756.97 701 691 138.9
A 13 6 12280 83.45 701 691 138.9
B 5 172 1000245 7818.39 680 665 127.8
B 3 112 141353 1100.42 680 665 127.8
B 15 222 63870 494.37 680 665 127.8
C 3 233 437334 2815.68 682 691 155.1
C 0 10 338213 2176.5 682 691 155.1
C 15 214 227438 1462.17 682 691 155.1
D 12 235 3923686 25563.65 628 611 153.5
D 8 195 1351434 8802.27 628 611 153.5
D 2 250 520625 3388.53 628 611 153.5

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