ASTROSAT CZTI

Data Quality Report

Orbit 20321

Creation date: 2024-06-27T18:13:51.310038
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/AS1A05_174T01_9000003008_20321cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20321cztM0_level2_quad_clean.evt
Size (bytes)456,085,440109,751,040
Size435.0 MB 104.7 MB
Events in quadrant A3,221,253718,259
Events in quadrant B3,449,676745,162
Events in quadrant C3,311,331722,379
Events in quadrant D3,406,065702,168

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134553
B0142772
C0136402
D0140862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6243280.448502%
B6243951.521704%
C6243761.217363%
D6243631.009130%

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 7553 6244 0 0 0.00% 0.00%
B 7553 6244 24 24 0.32% 0.38%
C 7553 6244 0 0 0.00% 0.00%
D 7553 6244 36 36 0.48% 0.58%

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 14 238 55303 333.53 819 806 163.4
A 11 29 9688 54.36 819 806 163.4
A 13 254 9265 51.77 819 806 163.4
B 7 220 173009 1118.37 823 804 154.0
B 0 230 24406 153.28 823 804 154.0
B 12 111 17808 110.43 823 804 154.0
C 14 238 127643 668.71 812 820 189.7
C 0 207 11848 58.15 812 820 189.7
C 13 61 5557 24.98 812 820 189.7
D 9 1 272403 1374.7 815 795 197.6
D 1 52 31969 157.78 815 795 197.6
D 2 234 28218 138.8 815 795 197.6

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