ASTROSAT CZTI

Data Quality Report

Orbit 09874

Creation date: 2024-06-27T15:51:42.952692
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/AS1A03_117T06_9000001404_09874cztM0_level2.evt modeM0/AS1A03_117T06_9000001404_09874cztM0_level2_quad_clean.evt
Size (bytes)551,499,84084,706,560
Size526.0 MB 80.8 MB
Events in quadrant A3,347,370532,523
Events in quadrant B3,443,648548,435
Events in quadrant C4,395,448511,550
Events in quadrant D5,028,518472,434

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01490110
B0150164
C01808913
D0200292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71701732.412831%
B71721862.593419%
C71694446.193332%
D71736859.549700%

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 8812 7175 0 0 0.00% 0.00%
B 8813 7176 1 1 0.01% 0.01%
C 8813 7176 164 164 1.86% 2.29%
D 8813 7176 514 514 5.83% 7.16%

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 0 226 7978 40.46 868 850 176.2
A 12 194 6772 33.62 868 850 176.2
A 13 253 5266 25.07 868 850 176.2
B 0 85 23159 131.56 872 850 169.6
B 4 81 22467 127.48 872 850 169.6
B 12 111 20578 116.34 872 850 169.6
C 4 254 1060792 5493.13 824 828 193.0
C 1 3 54516 278.23 824 828 193.0
C 14 234 37019 187.56 824 828 193.0
D 10 253 1516663 7276.22 802 784 208.3
D 1 52 322170 1542.65 802 784 208.3
D 10 172 83224 395.71 802 784 208.3

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