ASTROSAT CZTI

Data Quality Report

Orbit 31938

Creation date: 2024-06-27T20:34:23.740665
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/AS1C06_002T04_9000004660_31938cztM0_level2.evt modeM0/AS1C06_002T04_9000004660_31938cztM0_level2_quad_clean.evt
Size (bytes)717,459,840112,152,960
Size684.2 MB 107.0 MB
Events in quadrant A3,516,168773,028
Events in quadrant B5,807,445745,035
Events in quadrant C5,811,522695,765
Events in quadrant D6,125,746699,655

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015412
B015412
C015310
D015414

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164941433
B0242641807
C0231171120
D0247321821

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6938861.239550%
B68883214.660279%
C694687512.597178%
D69154756.869125%

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 7929 7004 24 24 0.30% 0.34%
B 7929 6928 118 118 1.49% 1.70%
C 7928 7002 210 210 2.65% 3.00%
D 7928 6956 298 298 3.76% 4.28%

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 12 96 248998 1469.27 841 824 168.9
A 13 6 21154 120.36 841 824 168.9
A 13 254 12987 72.01 841 824 168.9
B 6 159 2009828 13056.97 818 796 153.9
B 5 172 435535 2825.43 818 796 153.9
B 10 245 50188 321.01 818 796 153.9
C 3 233 2489507 13610.14 778 782 182.9
C 14 238 146217 795.34 778 782 182.9
C 0 10 51442 277.05 778 782 182.9
D 8 195 1393532 7361.9 799 779 189.2
D 12 33 959040 5065.24 799 779 189.2
D 13 249 295302 1556.81 799 779 189.2

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