ASTROSAT CZTI

Data Quality Report

Orbit 18220

Creation date: 2024-06-27T17:46:55.602327
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/AS1C04_009T03_9000002714_18220cztM0_level2.evt modeM0/AS1C04_009T03_9000002714_18220cztM0_level2_quad_clean.evt
Size (bytes)456,969,600128,566,080
Size435.8 MB 122.6 MB
Events in quadrant A3,097,492867,485
Events in quadrant B3,165,605884,213
Events in quadrant C3,095,452852,468
Events in quadrant D4,026,954824,488

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137682
B0138372
C0136642
D0165182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6682220.329243%
B6682310.463933%
C6682470.703382%
D66821662.484286%

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 7787 6683 2 2 0.03% 0.03%
B 7787 6683 4 4 0.05% 0.06%
C 7787 6683 0 0 0.00% 0.00%
D 7787 6683 147 147 1.89% 2.20%

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 15 174 64004 397.59 787 769 159.0
A 0 226 6936 38.77 787 769 159.0
A 3 137 5864 32.03 787 769 159.0
B 0 198 17704 111.97 793 773 151.2
B 12 111 17466 110.4 793 773 151.2
B 7 220 17247 108.95 793 773 151.2
C 14 238 118359 661.6 761 764 177.7
C 3 233 8755 44.96 761 764 177.7
C 13 61 5342 25.76 761 764 177.7
D 1 52 642843 3484.4 759 737 184.3
D 7 238 268614 1453.64 759 737 184.3
D 2 33 148066 799.48 759 737 184.3

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