ASTROSAT CZTI

Data Quality Report

Orbit 23072

Creation date: 2024-06-27T18:49:23.330371
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/AS1A07_049T01_9000003408_23072cztM0_level2.evt modeM0/AS1A07_049T01_9000003408_23072cztM0_level2_quad_clean.evt
Size (bytes)490,910,40080,519,040
Size468.2 MB 76.8 MB
Events in quadrant A3,281,064506,987
Events in quadrant B3,430,766523,369
Events in quadrant C3,569,056494,100
Events in quadrant D4,159,078474,276

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135512
B0139652
C0144312
D0165323

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6296260.412961%
B6296420.667090%
C62961672.652478%
D62951943.081811%

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 7696 6297 1 1 0.01% 0.02%
B 7696 6297 14 14 0.18% 0.22%
C 7696 6297 36 36 0.47% 0.57%
D 7695 6296 140 140 1.82% 2.22%

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 13 254 9977 54.46 847 833 167.9
A 6 16 9935 54.21 847 833 167.9
A 0 226 7306 38.55 847 833 167.9
B 4 216 36929 231.3 851 833 156.1
B 0 189 23069 142.48 851 833 156.1
B 12 111 18275 111.77 851 833 156.1
C 0 10 170097 882.77 827 836 191.7
C 14 238 132187 685.06 827 836 191.7
C 0 207 22392 112.42 827 836 191.7
D 1 52 824217 4149.88 831 811 198.4
D 1 239 93878 469.05 831 811 198.4
D 12 227 64492 320.94 831 811 198.4

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