ASTROSAT CZTI

Data Quality Report

Orbit 28858

Creation date: 2024-06-27T19:57:15.860625
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/AS1A10_103T08_9000004136_28858cztM0_level2.evt modeM0/AS1A10_103T08_9000004136_28858cztM0_level2_quad_clean.evt
Size (bytes)694,330,560121,916,160
Size662.2 MB 116.3 MB
Events in quadrant A3,685,807874,469
Events in quadrant B3,589,160875,562
Events in quadrant C3,913,259834,795
Events in quadrant D9,388,114641,470

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151331
B0150341
C0159731
D0323711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6668510.764847%
B66682013.014397%
C6669971.454491%
D6669256538.461538%

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 7648 6668 34 34 0.44% 0.51%
B 7648 6668 112 112 1.46% 1.68%
C 7649 6669 4 4 0.05% 0.06%
D 7648 6668 2512 2512 32.85% 37.67%

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 14 235 599168 3744.89 798 783 159.8
A 13 254 12442 72.97 798 783 159.8
A 15 174 8047 45.46 798 783 159.8
B 5 172 361814 2417.1 786 768 149.4
B 5 255 77767 515.49 786 768 149.4
B 0 244 33103 216.47 786 768 149.4
C 3 233 805844 4555.71 756 759 176.7
C 14 238 124575 700.63 756 759 176.7
C 0 207 14687 78.81 756 759 176.7
D 8 195 4086823 27141.2 623 603 150.6
D 1 52 2581941 17145.58 623 603 150.6
D 7 80 164494 1088.59 623 603 150.6

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