ASTROSAT CZTI

Data Quality Report

Orbit 04921

Creation date: 2024-06-27T14:48:51.781961
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/AS1G05_118T01_9000000622_04921cztM0_level2.evt modeM0/AS1G05_118T01_9000000622_04921cztM0_level2_quad_clean.evt
Size (bytes)454,245,12075,395,520
Size433.2 MB 71.9 MB
Events in quadrant A3,000,103472,994
Events in quadrant B3,375,156474,929
Events in quadrant C2,815,711469,470
Events in quadrant D4,151,843440,132

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126872
B0139901
C0125001
D0164501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6091751.231325%
B60911622.659662%
C6091370.607454%
D60913295.401412%

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 7371 6091 5 5 0.07% 0.08%
B 7371 6091 89 89 1.21% 1.46%
C 7371 6091 4 4 0.05% 0.07%
D 7371 6092 216 216 2.93% 3.55%

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 0 31 131894 879.72 738 723 149.1
A 15 31 12157 76.68 738 723 149.1
A 15 222 9400 58.19 738 723 149.1
B 10 16 293452 2148.69 732 715 136.2
B 4 48 95858 698.35 732 715 136.2
B 15 54 78244 569.06 732 715 136.2
C 1 16 28934 175.4 706 710 160.9
C 9 247 27596 167.08 706 710 160.9
C 13 61 5870 32.07 706 710 160.9
D 2 33 708819 4188.76 701 680 169.1
D 2 136 164104 966.68 701 680 169.1
D 13 235 120659 709.69 701 680 169.1

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