ASTROSAT CZTI

Data Quality Report

Orbit 29720

Creation date: 2024-06-27T20:07:09.581988
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/AS1A10_007T01_9000004276_29720cztM0_level2.evt modeM0/AS1A10_007T01_9000004276_29720cztM0_level2_quad_clean.evt
Size (bytes)605,687,040100,768,320
Size577.6 MB 96.1 MB
Events in quadrant A3,290,680649,717
Events in quadrant B5,500,157659,182
Events in quadrant C3,759,653647,177
Events in quadrant D5,330,786619,727

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141512
B0211362
C0152502
D0203522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6832410.600117%
B68321572.298009%
C68321522.224824%
D68323695.401054%

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 7527 6833 0 0 0.00% 0.00%
B 7527 6833 6 6 0.08% 0.09%
C 7527 6833 5 5 0.07% 0.07%
D 7527 6833 263 263 3.49% 3.85%

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 12963 70.45 852 833 172.2
A 3 137 8649 45.4 852 833 172.2
A 0 226 6991 35.77 852 833 172.2
B 6 159 1999691 12178.98 849 824 164.1
B 0 229 101452 613.12 849 824 164.1
B 10 245 25929 152.96 849 824 164.1
C 3 233 321286 1642.56 830 838 195.1
C 14 238 140230 714.5 830 838 195.1
C 10 22 27097 134.6 830 838 195.1
D 8 195 1578357 8073.54 818 796 195.4
D 7 80 288881 1474.34 818 796 195.4
D 13 189 79187 401.18 818 796 195.4

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