ASTROSAT CZTI

Data Quality Report

Orbit 20849

Creation date: 2024-06-27T18:20:22.229219
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/AS1C04_001T01_9000003074_20849cztM0_level2.evt modeM0/AS1C04_001T01_9000003074_20849cztM0_level2_quad_clean.evt
Size (bytes)643,921,920117,086,400
Size614.1 MB 111.7 MB
Events in quadrant A3,282,761803,754
Events in quadrant B3,580,668789,764
Events in quadrant C3,345,992757,486
Events in quadrant D8,812,542701,548

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145811
B0152711
C0145861
D0311811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7079290.409662%
B7079761.073598%
C7079951.341997%
D7079130318.406555%

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 7423 7078 8 8 0.11% 0.11%
B 7423 7078 13 13 0.18% 0.18%
C 7423 7078 6 6 0.08% 0.08%
D 7423 7078 1297 1297 17.47% 18.32%

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 5 16 60102 349.58 837 818 169.6
A 0 226 7200 37.63 837 818 169.6
A 3 137 6605 34.12 837 818 169.6
B 7 220 103210 653.09 829 806 156.8
B 0 190 76958 485.67 829 806 156.8
B 4 216 67419 424.83 829 806 156.8
C 14 238 123923 661.49 798 803 186.1
C 0 207 43252 228.07 798 803 186.1
C 9 54 13481 68.12 798 803 186.1
D 1 20 5076363 26693.19 785 759 190.1
D 1 239 363203 1906.14 785 759 190.1
D 9 1 155385 813.2 785 759 190.1

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