ASTROSAT CZTI

Data Quality Report

Orbit 16979

Creation date: 2024-06-27T17:30:38.532659
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_058T01_9000002522_16979cztM0_level2.evt modeM0/AS1T03_058T01_9000002522_16979cztM0_level2_quad_clean.evt
Size (bytes)550,362,240100,379,520
Size524.9 MB 95.7 MB
Events in quadrant A4,003,257654,790
Events in quadrant B3,387,265674,569
Events in quadrant C3,846,131648,544
Events in quadrant D5,007,455625,750

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159112
B0137382
C0157922
D0188732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62541792.862168%
B6254991.582987%
C62541522.430445%
D625469411.096898%

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 7551 6256 83 83 1.10% 1.33%
B 7551 6256 5 5 0.07% 0.08%
C 7551 6256 0 0 0.00% 0.00%
D 7551 6256 441 441 5.84% 7.05%

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 848722 5287.66 818 805 160.4
A 0 226 7120 39.38 818 805 160.4
A 9 143 6593 36.09 818 805 160.4
B 7 220 54356 359.93 822 806 148.8
B 3 64 35801 235.22 822 806 148.8
B 0 197 26750 174.38 822 806 148.8
C 3 233 589487 3250.29 801 808 181.1
C 14 238 127287 698.33 801 808 181.1
C 13 61 5711 27.07 801 808 181.1
D 1 52 2032070 11155.8 772 752 182.1
D 12 110 29239 156.45 772 752 182.1
D 2 234 24358 129.64 772 752 182.1

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