ASTROSAT CZTI

Data Quality Report

Orbit 35411

Creation date: 2022-09-12T19:12:44.250516
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/AS1T05_022T01_9000005070_35411cztM0_level2.evt modeM0/AS1T05_022T01_9000005070_35411cztM0_level2_quad_clean.evt
Size (bytes)632,678,40057,101,760
Size603.4 MB 54.5 MB
Events in quadrant A2,771,019338,565
Events in quadrant B8,689,784324,831
Events in quadrant C3,457,318335,149
Events in quadrant D3,844,212319,054

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119493
B0298022
C0137752
D0151922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A587930.051029%
B5879242341.214492%
C5879821.394795%
D58791843.129784%

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 7282 5880 0 0 0.00% 0.00%
B 7282 5880 1945 1945 26.71% 33.08%
C 7282 5880 61 61 0.84% 1.04%
D 7282 5880 147 147 2.02% 2.50%

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 118755 852.96 681 666 138.4
A 13 6 18945 132.03 681 666 138.4
A 13 254 9479 63.66 681 666 138.4
B 4 251 2172406 20088.39 561 545 108.1
B 5 236 1591712 14717.32 561 545 108.1
B 5 14 740259 6841.9 561 545 108.1
C 0 207 282341 1842.08 662 665 152.9
C 0 10 269863 1760.48 662 665 152.9
C 15 214 240451 1568.13 662 665 152.9
D 7 80 486536 2998.84 660 642 162.0
D 8 195 130502 801.47 660 642 162.0
D 2 31 86162 527.81 660 642 162.0

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