ASTROSAT CZTI

Data Quality Report

Orbit 37858

Creation date: 2024-06-27T21:45:23.717050
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/AS1C07_001T12_9000005352_37858cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37858cztM0_level2_quad_clean.evt
Size (bytes)477,501,12081,316,800
Size455.4 MB 77.5 MB
Events in quadrant A4,552,403475,592
Events in quadrant B3,153,906543,872
Events in quadrant C2,891,140533,030
Events in quadrant D3,475,944510,375

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173283
B0132632
C0120622
D0143372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A570778913.825127%
B57071482.593306%
C5707550.963729%
D57071672.926231%

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 7140 5708 704 704 9.86% 12.33%
B 7140 5708 106 106 1.48% 1.86%
C 7140 5708 52 52 0.73% 0.91%
D 7140 5708 124 124 1.74% 2.17%

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 9 143 1978271 17351.65 564 553 114.0
A 10 83 353244 3094.36 564 553 114.0
A 13 6 21349 182.46 564 553 114.0
B 5 172 523265 4433.63 618 602 117.9
B 0 189 38997 325.7 618 602 117.9
B 4 81 36848 307.47 618 602 117.9
C 15 214 237966 1669.42 608 613 142.2
C 0 10 187360 1313.48 608 613 142.2
C 14 67 64749 451.1 608 613 142.2
D 1 52 275980 1879.18 606 589 146.5
D 2 249 268265 1826.54 606 589 146.5
D 2 250 183520 1248.26 606 589 146.5

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