ASTROSAT CZTI

Data Quality Report

Orbit 43926

Creation date: 2024-06-27T22:57:17.347802
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/AS1A13_023T01_9000005916_43926cztM0_level2.fits modeM0/AS1A13_023T01_9000005916_43926cztM0_level2_quad_clean.evt
Size (bytes)568,244,160119,148,480
Size541.9 MB 113.6 MB
Events in quadrant A7,518,819768,010
Events in quadrant B4,419,150819,901
Events in quadrant C3,708,045800,550
Events in quadrant D4,811,677701,461

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277322
B0180182
C0162722
D0194262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74376038.108108%
B74384205.646679%
C74372563.442248%
D74375477.355116%

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 9107 7439 92 92 1.01% 1.24%
B 9108 7440 61 61 0.67% 0.82%
C 9107 7439 16 16 0.18% 0.22%
D 9107 7439 309 309 3.39% 4.15%

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 15 222 2171070 12112.2 867 847 179.2
A 10 83 1211207 6755.12 867 847 179.2
A 15 223 444950 2478.58 867 847 179.2
B 5 172 226169 1275.76 876 847 176.6
B 0 213 212329 1197.4 876 847 176.6
B 5 235 209506 1181.41 876 847 176.6
C 14 254 72474 343.12 877 882 208.7
C 10 22 67023 316.99 877 882 208.7
C 15 158 64712 305.92 877 882 208.7
D 5 235 746459 3439.35 858 830 216.8
D 1 52 164163 753.4 858 830 216.8
D 13 171 161214 739.8 858 830 216.8

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