ASTROSAT CZTI

Data Quality Report

Orbit 32756

Creation date: 2024-06-27T20:41:39.178532
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/AS1A10_057T04_9000004728_32756cztM0_level2.evt modeM0/AS1A10_057T04_9000004728_32756cztM0_level2_quad_clean.evt
Size (bytes)421,649,28083,828,160
Size402.1 MB 79.9 MB
Events in quadrant A2,576,073547,512
Events in quadrant B2,770,535565,147
Events in quadrant C2,660,850551,467
Events in quadrant D4,402,849504,033

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108943
B0114502
C0112072
D0167012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5288140.264750%
B5288240.453858%
C5288220.416036%
D52883747.072617%

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 7291 5289 8 8 0.11% 0.15%
B 7291 5289 10 10 0.14% 0.19%
C 7291 5289 16 16 0.22% 0.30%
D 7291 5289 322 322 4.42% 6.09%

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 28458 216.8 645 634 128.3
A 0 254 27261 207.48 645 634 128.3
A 12 16 16891 126.67 645 634 128.3
B 5 172 47350 383.47 650 637 121.8
B 0 197 43033 348.03 650 637 121.8
B 0 219 42369 342.58 650 637 121.8
C 0 10 109495 764.4 623 629 142.4
C 4 254 35616 245.66 623 629 142.4
C 8 35 33189 228.62 623 629 142.4
D 7 80 693240 4574.31 594 581 151.4
D 2 250 536487 3539.11 594 581 151.4
D 8 195 356093 2347.79 594 581 151.4

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