ASTROSAT CZTI

Data Quality Report

Orbit 24335

Creation date: 2024-06-27T19:04:54.124943
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/AS1A07_145T01_9000003594_24335cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24335cztM0_level2_quad_clean.evt
Size (bytes)501,220,80083,136,960
Size478.0 MB 79.3 MB
Events in quadrant A2,907,185525,784
Events in quadrant B2,959,022542,217
Events in quadrant C5,258,139509,332
Events in quadrant D3,635,382507,947

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126775
B0127727
C02004119
D01508213

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6198731.177799%
B6198991.597289%
C61962554.115558%
D6196961.549387%

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 6864 6198 0 0 0.00% 0.00%
B 6865 6199 0 0 0.00% 0.00%
C 6866 6200 26 26 0.38% 0.42%
D 6865 6200 34 34 0.50% 0.55%

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 13 254 8806 52.8 754 738 152.8
A 3 137 7031 41.18 754 738 152.8
A 0 226 6397 37.03 754 738 152.8
B 12 111 17746 118.35 751 733 143.8
B 11 111 15849 105.15 751 733 143.8
B 14 111 14197 93.66 751 733 143.8
C 7 247 2219054 13269.24 715 718 167.2
C 2 16 123861 736.59 715 718 167.2
C 14 238 114864 682.78 715 718 167.2
D 7 238 388757 2164.45 730 708 179.3
D 8 195 276185 1536.55 730 708 179.3
D 7 223 102297 566.64 730 708 179.3

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