ASTROSAT CZTI

Data Quality Report

Orbit 48165

Creation date: 2024-08-24T15:28:41.061504
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/AS1C09_004T05_9000006408_48165cztM0_level2.fits modeM0/AS1C09_004T05_9000006408_48165cztM0_level2_quad_clean.evt
Size (bytes)1,163,537,280231,439,680
Size1.1 GB 220.7 MB
Events in quadrant A19,766,5891,952,271
Events in quadrant B3,267,879229
Events in quadrant C9,177,5201,939,290
Events in quadrant D9,341,6871,785,344

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03902

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072828160
B02035641
C041790107
D04241998

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A193006343.284974%
B193131931199.989644%
C192982471.279925%
D193022901.502435%

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 20452 19312 21 21 0.10% 0.11%
B 20451 19245 0 0 0.00% 0.00%
C 20452 19314 122 122 0.60% 0.63%
D 20452 19316 194 194 0.95% 1.00%

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 10 83 11439223 26491.16 2087 2039 431.7
A 0 31 94779 214.81 2087 2039 431.7
A 13 248 78221 176.46 2087 2039 431.7
B 2 177 2669089 89770.6 139 135 29.7
B 4 21 24366 815.01 139 135 29.7
B 0 186 5686 186.71 139 135 29.7
C 12 2 990316 2049.35 2058 2065 482.2
C 14 254 70845 142.63 2058 2065 482.2
C 14 67 48724 96.76 2058 2065 482.2
D 1 232 420331 812.01 2062 1990 515.2
D 12 1 225101 433.06 2062 1990 515.2
D 13 29 160844 308.34 2062 1990 515.2

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