ASTROSAT CZTI

Data Quality Report

Orbit 33895

Creation date: 2024-06-27T20:53:52.230268
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/AS1T04_090T01_9000004840_33895cztM0_level2.evt modeM0/AS1T04_090T01_9000004840_33895cztM0_level2_quad_clean.evt
Size (bytes)1,651,415,040230,837,760
Size1.5 GB 220.1 MB
Events in quadrant A15,622,0591,466,454
Events in quadrant B10,153,8931,508,674
Events in quadrant C8,784,8791,509,289
Events in quadrant D14,395,9011,421,731

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0579345
B0407994
C0360134
D0537294

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03240
C03240
D03240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15724167610.658865%
B157249446.003561%
C157242121.348257%
D157248065.125922%

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 21246 15728 1171 1171 5.51% 7.45%
B 21246 15728 621 621 2.92% 3.95%
C 21246 15728 151 151 0.71% 0.96%
D 21246 15728 513 513 2.41% 3.26%

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 15 169 8710319 25074.6 1756 1723 347.3
A 7 16 56526 157.79 1756 1723 347.3
A 13 6 53987 150.48 1756 1723 347.3
B 5 172 2575833 7716.66 1753 1705 333.6
B 0 156 135164 400.08 1753 1705 333.6
B 4 251 125880 372.25 1753 1705 333.6
C 0 10 722932 1809.34 1744 1756 398.6
C 15 214 674529 1687.91 1744 1756 398.6
C 3 233 271381 676.46 1744 1756 398.6
D 1 52 3741390 8775.3 1727 1675 426.2
D 8 195 2456042 5759.21 1727 1675 426.2
D 13 249 405116 946.68 1727 1675 426.2

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