ASTROSAT CZTI

Data Quality Report

Orbit 31164

Creation date: 2024-06-27T20:24:32.220472
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_001T01_9000004508_31164cztM0_level2.evt modeM0/AS1C06_001T01_9000004508_31164cztM0_level2_quad_clean.evt
Size (bytes)297,924,48036,573,120
Size284.1 MB 34.9 MB
Events in quadrant A1,656,073238,516
Events in quadrant B2,501,521234,517
Events in quadrant C1,764,362219,315
Events in quadrant D2,905,624210,500

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068891
B092863
C072391
D0106651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2858592.064381%
B28571194.165208%
C28571886.580329%
D28572689.380469%

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 4168 2859 0 0 0.00% 0.00%
B 4167 2858 1 1 0.02% 0.03%
C 4167 2858 1 1 0.02% 0.03%
D 4167 2858 183 183 4.39% 6.40%

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 11 47 11392 128.84 426 419 85.2
A 13 254 5188 56.0 426 419 85.2
A 3 137 3859 40.39 426 419 85.2
B 6 159 770645 9546.82 416 407 80.7
B 15 33 82517 1017.72 416 407 80.7
B 0 190 16751 202.57 416 407 80.7
C 14 238 107151 1134.87 398 401 94.1
C 14 254 59941 632.98 398 401 94.1
C 0 10 23302 243.46 398 401 94.1
D 8 195 875262 9377.54 396 387 93.3
D 13 174 304564 3260.38 396 387 93.3
D 12 218 173312 1853.53 396 387 93.3

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