ASTROSAT CZTI

Data Quality Report

Orbit 20099

Creation date: 2024-06-27T18:11:17.283646
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/AS1A05_180T01_9000002992_20099cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20099cztM0_level2_quad_clean.evt
Size (bytes)705,067,20099,627,840
Size672.4 MB 95.0 MB
Events in quadrant A6,908,208587,208
Events in quadrant B4,092,279683,797
Events in quadrant C3,297,894659,139
Events in quadrant D6,585,177602,687

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251892
B0165842
C0142973
D0243752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6942151221.780467%
B6942731.051570%
C6941701.008500%
D694197614.061374%

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 7752 6943 952 952 12.28% 13.71%
B 7752 6943 11 11 0.14% 0.16%
C 7751 6942 0 0 0.00% 0.00%
D 7751 6942 866 866 11.17% 12.47%

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 14 238 3510206 23511.85 739 725 149.3
A 14 254 531158 3553.65 739 725 149.3
A 14 237 10784 67.39 739 725 149.3
B 10 245 704953 4355.78 837 817 161.7
B 4 80 51378 312.77 837 817 161.7
B 0 198 28125 168.93 837 817 161.7
C 14 238 125270 654.46 807 814 190.2
C 8 128 14186 70.32 807 814 190.2
C 8 112 6210 28.38 807 814 190.2
D 1 52 2992399 15663.9 782 759 191.0
D 12 218 519995 2718.66 782 759 191.0
D 2 184 46352 238.72 782 759 191.0

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