ASTROSAT CZTI

Data Quality Report

Orbit 36998

Creation date: 2024-06-27T21:34:02.617690
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/AS1A11_079T01_9000005254_36998cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_36998cztM0_level2_quad_clean.evt
Size (bytes)446,195,52099,043,200
Size425.5 MB 94.5 MB
Events in quadrant A2,781,850674,203
Events in quadrant B3,600,560664,063
Events in quadrant C3,326,195665,400
Events in quadrant D3,452,564632,450

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115113
B0142662
C0132152
D0136132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5185130.250723%
B51851903.664417%
C51851042.005786%
D51851532.950820%

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 7157 5186 0 0 0.00% 0.00%
B 7157 5186 160 160 2.24% 3.09%
C 7157 5186 92 92 1.29% 1.77%
D 7157 5186 125 125 1.75% 2.41%

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 10 83 214682 1620.85 662 651 132.0
A 13 254 6737 46.09 662 651 132.0
A 3 137 6352 43.17 662 651 132.0
B 5 184 848744 7074.85 638 625 119.9
B 0 155 65024 537.2 638 625 119.9
B 0 213 52981 436.74 638 625 119.9
C 10 20 276164 1840.29 645 652 149.7
C 15 214 223353 1487.54 645 652 149.7
C 1 23 142422 946.96 645 652 149.7
D 1 52 662560 4278.33 643 626 154.7
D 2 153 119183 766.28 643 626 154.7
D 12 227 118298 760.56 643 626 154.7

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