ASTROSAT CZTI

Data Quality Report

Orbit 30728

Creation date: 2024-06-27T20:18:57.330759
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/AS1A10_071T11_9000004436_30728cztM0_level2.evt modeM0/AS1A10_071T11_9000004436_30728cztM0_level2_quad_clean.evt
Size (bytes)661,104,00072,164,160
Size630.5 MB 68.8 MB
Events in quadrant A4,378,760443,581
Events in quadrant B5,128,660468,211
Events in quadrant C3,500,722437,920
Events in quadrant D6,583,314390,277

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169761
B0194631
C0141881
D0242531

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63713675.760477%
B6371801.255690%
C6370971.522763%
D637071611.240188%

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 7546 6372 281 281 3.72% 4.41%
B 7546 6371 7 7 0.09% 0.11%
C 7545 6370 19 19 0.25% 0.30%
D 7545 6370 647 647 8.58% 10.16%

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 13 1113273 6722.88 834 819 165.5
A 8 192 47821 284.05 834 819 165.5
A 13 254 10692 59.67 834 819 165.5
B 6 159 1772266 11088.4 842 824 159.8
B 5 172 24861 150.46 842 824 159.8
B 12 111 19358 116.01 842 824 159.8
C 3 233 169692 901.67 800 808 187.3
C 14 238 131403 697.24 800 808 187.3
C 0 10 34207 178.32 800 808 187.3
D 8 195 2094881 10356.31 769 755 202.2
D 10 253 1397963 6909.77 769 755 202.2
D 2 250 71280 348.77 769 755 202.2

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