ASTROSAT CZTI

Data Quality Report

Orbit 20190311_A06_005T01_9000002788_level2

Creation date: 2025-11-28T18:06:28.735582
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/AS1A06_005T01_9000002788cztM0_level2.fits modeM0/AS1A06_005T01_9000002788cztM0_level2_quad_clean.evt
Size (bytes)568,998,720566,380,800
Size542.6 MB 540.1 MB
Events in quadrant A3,596,8263,668,211
Events in quadrant B3,460,9343,682,470
Events in quadrant C3,499,7523,477,501
Events in quadrant D2,579,8322,236,520

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012100
B012100
C012100
D012100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260220
B01258150
C01252850
D02464370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A596156001.006458%
B596167651.283213%
C596169101.526436%
D596151459724.485448%

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 68636 59611 0 0 0.00% 0.00%
B 68636 59609 0 0 0.00% 0.00%
C 68636 59609 0 0 0.00% 0.00%
D 68636 58302 0 0 0.00% 0.00%

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 7 110 2954 8.93 937 881 232.0
A 0 29 2917 8.78 937 881 232.0
A 9 19 2653 7.64 937 881 232.0
B 2 9 2748 10.46 915 874 179.2
B 2 8 2310 8.01 915 874 179.2
B 14 254 2260 7.73 915 874 179.2
C 12 241 2457 6.68 924 865 238.4
C 3 126 2426 6.55 924 865 238.4
C 2 191 2380 6.36 924 865 238.4
D 10 190 1919 6.49 735 672 192.1
D 3 14 1880 6.29 735 672 192.1
D 6 231 1865 6.21 735 672 192.1

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