ASTROSAT CZTI

Data Quality Report

Orbit 00904

Creation date: 2024-06-27T14:04:33.064374
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/AS1P01_161T05_9000000180_00904cztM0_level2.evt modeM0/AS1P01_161T05_9000000180_00904cztM0_level2_quad_clean.evt
Size (bytes)512,994,24030,890,880
Size489.2 MB 29.5 MB
Events in quadrant A3,523,508183,433
Events in quadrant B4,303,001173,866
Events in quadrant C3,385,950184,602
Events in quadrant D4,119,038175,086

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126420
B0150320
C0122420
D0143810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A305300.000000%
B30532247.337046%
C305320.065509%
D3053220.720603%

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 3053 3053 38 38 1.24% 1.24%
B 3053 3053 339 339 11.10% 11.10%
C 3053 3053 43 43 1.41% 1.41%
D 3053 3053 246 246 8.06% 8.06%

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 15 127 26318 113.86 910 920 223.1
A 8 192 4872 17.72 910 920 223.1
A 11 79 3613 12.07 910 920 223.1
B 3 0 770479 3581.28 901 909 214.9
B 0 220 36973 167.83 901 909 214.9
B 5 249 25032 112.26 901 909 214.9
C 9 83 142296 617.18 815 843 229.2
C 9 54 23740 99.9 815 843 229.2
C 15 241 11844 48.0 815 843 229.2
D 12 188 1060803 4193.77 806 835 252.7
D 13 169 25436 97.33 806 835 252.7
D 10 125 10275 37.35 806 835 252.7

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