ASTROSAT CZTI

Data Quality Report

Orbit 32161

Creation date: 2024-06-27T20:37:09.464310
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/AS1A09_131T01_9000004690_32161cztM0_level2.evt modeM0/AS1A09_131T01_9000004690_32161cztM0_level2_quad_clean.evt
Size (bytes)579,139,200105,036,480
Size552.3 MB 100.2 MB
Events in quadrant A3,053,372694,620
Events in quadrant B5,166,622696,619
Events in quadrant C3,381,997695,845
Events in quadrant D5,519,401662,642

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132071
B0199991
C0142151
D0206791

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6177250.404727%
B61781552.508903%
C61781772.865005%
D61783435.551959%

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 7347 6178 0 0 0.00% 0.00%
B 7348 6179 37 37 0.50% 0.60%
C 7348 6179 44 44 0.60% 0.71%
D 7348 6179 259 259 3.52% 4.19%

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 12 189 39491 249.33 777 761 155.3
A 13 6 15960 97.84 777 761 155.3
A 13 254 11008 65.97 777 761 155.3
B 6 159 1782892 12392.0 772 755 143.8
B 5 172 170403 1179.64 772 755 143.8
B 0 229 71734 493.55 772 755 143.8
C 0 10 248309 1408.48 753 758 175.8
C 14 238 125253 708.34 753 758 175.8
C 4 175 25046 138.19 753 758 175.8
D 8 195 1722901 9548.69 752 730 180.4
D 12 233 654664 3625.78 752 730 180.4
D 14 50 157069 866.83 752 730 180.4

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