ASTROSAT CZTI

Data Quality Report

Orbit 20452

Creation date: 2024-06-27T18:15:33.204627
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/AS1A05_160T02_9000003022_20452cztM0_level2.evt modeM0/AS1A05_160T02_9000003022_20452cztM0_level2_quad_clean.evt
Size (bytes)547,004,16087,727,680
Size521.7 MB 83.7 MB
Events in quadrant A3,180,944581,382
Events in quadrant B3,513,720597,749
Events in quadrant C3,619,565550,699
Events in quadrant D5,844,986507,073

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131292
B0141612
C0144492
D0214662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6008220.366178%
B60081031.714381%
C60081532.546605%
D60075248.723156%

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 7403 6009 2 2 0.03% 0.03%
B 7403 6009 16 16 0.22% 0.27%
C 7403 6009 55 55 0.74% 0.92%
D 7402 6008 539 539 7.28% 8.97%

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 15 222 72637 449.21 802 789 159.9
A 6 16 12005 70.13 802 789 159.9
A 13 254 7099 39.45 802 789 159.9
B 7 220 125442 828.58 807 788 150.4
B 0 189 113864 751.62 807 788 150.4
B 0 197 36711 238.78 807 788 150.4
C 9 221 441052 2502.32 763 771 175.9
C 14 238 120805 682.21 763 771 175.9
C 3 233 83736 471.53 763 771 175.9
D 15 0 1292387 7194.93 738 717 179.5
D 7 238 666947 3711.07 738 717 179.5
D 1 52 634624 3531.02 738 717 179.5

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