ASTROSAT CZTI

Data Quality Report

Orbit 08134

Creation date: 2024-06-27T15:28:26.895210
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/AS1A02_178T01_9000001118_08134cztM0_level2.evt modeM0/AS1A02_178T01_9000001118_08134cztM0_level2_quad_clean.evt
Size (bytes)621,178,56086,734,080
Size592.4 MB 82.7 MB
Events in quadrant A8,754,925437,342
Events in quadrant B3,233,633606,041
Events in quadrant C3,157,061584,854
Events in quadrant D3,241,180559,211

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303413
B0135092
C0134662
D0139342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6278227836.285441%
B6278781.242434%
C6278550.876075%
D62781001.592864%

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 7593 6279 1938 1938 25.52% 30.86%
B 7593 6279 1 1 0.01% 0.02%
C 7593 6279 0 0 0.00% 0.00%
D 7593 6279 43 43 0.57% 0.68%

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 13 170 6233507 47285.71 652 641 131.8
A 14 111 7251 50.15 652 641 131.8
A 0 226 6169 41.94 652 641 131.8
B 0 219 25615 163.44 813 797 151.8
B 4 173 18984 119.77 813 797 151.8
B 10 16 18700 117.9 813 797 151.8
C 1 16 101890 567.31 777 782 178.2
C 8 128 13342 70.47 777 782 178.2
C 8 112 6323 31.09 777 782 178.2
D 1 52 218622 1057.87 761 745 206.0
D 13 169 44289 211.42 761 745 206.0
D 13 122 31872 151.13 761 745 206.0

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