ASTROSAT CZTI

Data Quality Report

Orbit 21808

Creation date: 2024-06-27T18:32:29.347300
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/AS1A07_004T01_9000003230_21808cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21808cztM0_level2_quad_clean.evt
Size (bytes)427,867,20084,548,160
Size408.0 MB 80.6 MB
Events in quadrant A3,002,171542,382
Events in quadrant B3,192,307546,662
Events in quadrant C2,910,655526,836
Events in quadrant D3,432,251512,627

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129851
B0134731
C0127221
D0141331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6187570.921287%
B6186701.131587%
C6186671.083091%
D6186600.969932%

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 7162 6188 11 11 0.15% 0.18%
B 7161 6187 16 16 0.22% 0.26%
C 7161 6186 0 0 0.00% 0.00%
D 7161 6187 35 35 0.49% 0.57%

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 14 235 82737 537.01 755 739 152.7
A 13 254 12511 77.1 755 739 152.7
A 13 252 9389 56.65 755 739 152.7
B 3 64 79741 546.64 751 732 144.5
B 0 197 76491 524.16 751 732 144.5
B 0 190 48210 328.49 751 732 144.5
C 14 238 111944 658.88 715 719 168.8
C 8 128 6458 34.0 715 719 168.8
C 13 61 5015 25.45 715 719 168.8
D 1 52 341208 1918.43 728 707 177.5
D 2 136 91023 508.85 728 707 177.5
D 13 153 84306 471.01 728 707 177.5

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