ASTROSAT CZTI

Data Quality Report

Orbit 50575

Creation date: 2025-02-02T23:39:58.010455
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/AS1T05_239T01_9000006444_50575cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50575cztM0_level2_quad_clean.evt
Size (bytes)543,107,52084,124,800
Size517.9 MB 80.2 MB
Events in quadrant A3,550,158566,636
Events in quadrant B4,096,465608,013
Events in quadrant C7,132,262445,001
Events in quadrant D4,845,744496,418

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147621
B0165951
C0254531
D0186471

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61771652.671200%
B61772233.610167%
C6178139622.596309%
D61773505.666181%

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 6997 6178 142 142 2.03% 2.30%
B 6997 6178 135 135 1.93% 2.19%
C 6998 6178 1047 1047 14.96% 16.95%
D 6997 6178 319 319 4.56% 5.16%

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 12 250 204474 1261.27 640 623 161.6
A 12 80 188997 1165.51 640 623 161.6
A 8 38 159462 982.77 640 623 161.6
B 4 170 649869 4753.26 636 613 136.6
B 0 229 273357 1996.78 636 613 136.6
B 5 185 94092 684.37 636 613 136.6
C 15 214 1757904 11348.56 563 558 154.9
C 15 196 1013774 6543.13 563 558 154.9
C 15 195 349710 2254.75 563 558 154.9
D 8 246 775485 4511.43 612 590 171.8
D 7 96 267385 1553.28 612 590 171.8
D 8 48 206795 1200.52 612 590 171.8

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