ASTROSAT CZTI

Data Quality Report

Orbit 40860

Creation date: 2024-06-27T22:21:25.447948
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/AS1A12_104T02_9000005572_40860cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40860cztM0_level2_quad_clean.evt
Size (bytes)1,164,502,080249,027,840
Size1.1 GB 237.5 MB
Events in quadrant A8,624,2271,697,702
Events in quadrant B9,973,4901,699,307
Events in quadrant C9,709,8781,567,545
Events in quadrant D13,557,8151,468,174

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0351575
B0407724
C0388644
D0512084

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16040390.243142%
B160406313.933915%
C160408055.018703%
D1604010776.714464%

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 21558 16044 19 19 0.09% 0.12%
B 21558 16043 356 356 1.65% 2.22%
C 21558 16044 678 678 3.15% 4.23%
D 21558 16044 949 949 4.40% 5.91%

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 1333850 3715.31 1757 1718 358.6
A 12 189 252108 698.34 1757 1718 358.6
A 13 248 119521 328.55 1757 1718 358.6
B 4 171 2887220 8733.51 1720 1670 330.4
B 0 229 153632 459.93 1720 1670 330.4
B 0 190 82016 243.18 1720 1670 330.4
C 14 254 2284563 5936.78 1655 1664 384.5
C 15 214 649343 1684.32 1655 1664 384.5
C 0 10 159083 409.37 1655 1664 384.5
D 12 79 3030661 7492.36 1665 1622 404.3
D 13 249 1974103 4878.95 1665 1622 404.3
D 2 249 1262148 3117.92 1665 1622 404.3

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