ASTROSAT CZTI

Data Quality Report

Orbit 35824

Creation date: 2022-05-19T14:09:30.630750
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/AS1A09_146T01_9000005142_35824cztM0_level2.evt modeM0/AS1A09_146T01_9000005142_35824cztM0_level2_quad_clean.evt
Size (bytes)437,512,32070,133,760
Size417.2 MB 66.9 MB
Events in quadrant A2,740,842450,579
Events in quadrant B3,116,331451,539
Events in quadrant C2,923,041438,969
Events in quadrant D4,109,337410,658

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113913
B0125912
C0116832
D0156372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5311100.188288%
B5311941.769912%
C5311771.449821%
D53112885.422708%

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 7134 5311 0 0 0.00% 0.00%
B 7133 5310 62 62 0.87% 1.17%
C 7133 5311 60 60 0.84% 1.13%
D 7134 5312 265 265 3.71% 4.99%

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 156458 1162.78 664 652 134.0
A 13 6 11259 79.16 664 652 134.0
A 13 254 7652 52.24 664 652 134.0
B 5 255 193196 1567.17 651 636 122.9
B 5 172 173869 1409.87 651 636 122.9
B 0 190 69839 563.21 651 636 122.9
C 0 10 231445 1576.26 630 633 146.4
C 15 214 225944 1538.7 630 633 146.4
C 0 207 10156 65.03 630 633 146.4
D 13 249 453573 2970.18 628 611 152.5
D 2 250 357068 2337.38 628 611 152.5
D 14 52 283335 1853.89 628 611 152.5

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