ASTROSAT CZTI

Data Quality Report

Orbit 19595

Creation date: 2024-06-27T18:04:34.324690
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/AS1T03_115T01_9000002914_19595cztM0_level2.evt modeM0/AS1T03_115T01_9000002914_19595cztM0_level2_quad_clean.evt
Size (bytes)461,718,720104,428,800
Size440.3 MB 99.6 MB
Events in quadrant A3,225,870685,850
Events in quadrant B3,246,634701,917
Events in quadrant C3,141,351675,808
Events in quadrant D3,926,009644,219

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139942
B0140372
C0136952
D0163232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65241061.624770%
B6524500.766401%
C6524570.873697%
D65241682.575107%

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 7649 6525 55 55 0.72% 0.84%
B 7649 6525 12 12 0.16% 0.18%
C 7649 6525 0 0 0.00% 0.00%
D 7649 6525 158 158 2.07% 2.42%

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 5 16 184554 1155.05 784 768 159.1
A 13 254 9383 54.14 784 768 159.1
A 11 29 8711 49.92 784 768 159.1
B 7 220 41160 269.38 793 774 149.9
B 0 197 28095 182.24 793 774 149.9
B 0 189 20173 129.39 793 774 149.9
C 14 238 120497 667.93 766 770 179.3
C 3 233 24077 130.02 766 770 179.3
C 5 112 8286 41.93 766 770 179.3
D 1 52 832033 4515.7 758 736 184.1
D 7 238 71915 386.65 758 736 184.1
D 7 38 36995 196.96 758 736 184.1

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