ASTROSAT CZTI

Data Quality Report

Orbit 04120

Creation date: 2024-06-27T14:37:41.021548
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/AS1G05_167T01_9000000528_04120cztM0_level2.evt modeM0/AS1G05_167T01_9000000528_04120cztM0_level2_quad_clean.evt
Size (bytes)368,789,76063,460,800
Size351.7 MB 60.5 MB
Events in quadrant A2,696,998395,064
Events in quadrant B2,822,911390,164
Events in quadrant C2,518,849386,955
Events in quadrant D2,766,635375,573

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114110
B0115990
C0111630
D0117640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5340961.797753%
B53401011.891386%
C5340801.498127%
D53401102.059925%

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 5340 5340 5 5 0.09% 0.09%
B 5340 5340 3 3 0.06% 0.06%
C 5340 5340 8 8 0.15% 0.15%
D 5340 5340 34 34 0.64% 0.64%

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 0 199 178468 1359.48 633 621 130.8
A 14 111 26310 196.37 633 621 130.8
A 0 226 21731 161.37 633 621 130.8
B 15 204 236895 1909.77 638 624 123.7
B 7 252 89029 714.58 638 624 123.7
B 12 111 11126 84.89 638 624 123.7
C 9 144 105172 717.97 616 620 145.6
C 10 65 5400 32.82 616 620 145.6
C 13 61 5190 31.38 616 620 145.6
D 2 37 229259 1537.8 613 594 148.7
D 12 233 80284 535.92 613 594 148.7
D 13 239 68448 456.33 613 594 148.7

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