ASTROSAT CZTI

Data Quality Report

Orbit 14897

Creation date: 2024-06-27T17:01:04.245869
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/AS1A04_011T09_9000002202_14897cztM0_level2.evt modeM0/AS1A04_011T09_9000002202_14897cztM0_level2_quad_clean.evt
Size (bytes)539,769,600101,350,080
Size514.8 MB 96.7 MB
Events in quadrant A3,162,825681,125
Events in quadrant B6,018,566636,692
Events in quadrant C3,129,024646,364
Events in quadrant D3,594,468651,129

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135522
B0222191
C0133281
D0150071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6504861.322263%
B6504135420.817958%
C6504751.153137%
D65041201.845018%

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 7135 6506 1 1 0.01% 0.02%
B 7135 6506 1035 1035 14.51% 15.91%
C 7135 6506 0 0 0.00% 0.00%
D 7135 6506 74 74 1.04% 1.14%

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 57603 355.46 792 776 159.9
A 14 237 40261 246.98 792 776 159.9
A 4 2 8455 48.03 792 776 159.9
B 3 64 3087846 24437.78 661 642 126.3
B 0 229 172617 1361.32 661 642 126.3
B 0 189 70199 550.6 661 642 126.3
C 3 233 151893 854.12 763 766 176.9
C 13 61 5500 26.76 763 766 176.9
C 3 232 2006 7.01 763 766 176.9
D 7 254 559913 3062.76 769 750 182.6
D 13 104 87706 476.29 769 750 182.6
D 2 234 23541 124.84 769 750 182.6

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