ASTROSAT CZTI

Data Quality Report

Orbit 18140

Creation date: 2024-06-27T17:45:49.580831
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/AS1T03_035T01_9000002696_18140cztM0_level2.evt modeM0/AS1T03_035T01_9000002696_18140cztM0_level2_quad_clean.evt
Size (bytes)616,314,24092,620,800
Size587.8 MB 88.3 MB
Events in quadrant A4,196,056564,203
Events in quadrant B4,016,472585,008
Events in quadrant C3,883,274566,045
Events in quadrant D6,039,233545,418

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174282
B0167892
C0164052
D0232372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78252312.952077%
B78261812.312803%
C78251852.364217%
D78253134.000000%

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 8990 7827 109 109 1.21% 1.39%
B 8991 7828 8 8 0.09% 0.10%
C 8990 7827 0 0 0.00% 0.00%
D 8990 7827 172 172 1.91% 2.20%

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 15 174 348785 1729.14 990 966 201.2
A 4 2 31792 153.25 990 966 201.2
A 0 226 8775 38.82 990 966 201.2
B 7 220 51781 264.26 994 970 192.3
B 0 189 26553 133.05 994 970 192.3
B 12 111 22440 111.66 994 970 192.3
C 14 238 145225 644.67 951 954 223.8
C 3 233 14897 62.3 951 954 223.8
C 5 218 12719 52.57 951 954 223.8
D 7 238 1936905 8129.28 961 931 238.1
D 12 110 152499 636.44 961 931 238.1
D 11 176 105487 439.04 961 931 238.1

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