ASTROSAT CZTI

Data Quality Report

Orbit 09055

Creation date: 2024-06-27T15:40:40.250878
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/AS1A03_046T01_9000001260_09055cztM0_level2.evt modeM0/AS1A03_046T01_9000001260_09055cztM0_level2_quad_clean.evt
Size (bytes)1,552,253,760302,158,080
Size1.4 GB 288.2 MB
Events in quadrant A13,671,2561,921,359
Events in quadrant B10,577,8581,932,914
Events in quadrant C9,907,7821,877,773
Events in quadrant D11,314,4741,853,063

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04640
B04640
C04640
D04640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05571225
B04720625
C04631634
D05044937

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A227675892.587078%
B227671030.452409%
C22759620.272420%
D227613341.467422%

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 25528 22776 527 527 2.06% 2.31%
B 25529 22779 18 18 0.07% 0.08%
C 25529 22779 36 36 0.14% 0.16%
D 25529 22778 255 255 1.00% 1.12%

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 8 5 3338232 6440.36 2570 2518 517.9
A 15 239 173284 329.7 2570 2518 517.9
A 5 16 130487 247.07 2570 2518 517.9
B 4 80 72314 141.83 2596 2535 492.0
B 6 51 59475 115.73 2596 2535 492.0
B 12 111 53433 103.45 2596 2535 492.0
C 14 234 163284 280.09 2493 2504 574.0
C 13 61 19050 28.82 2493 2504 574.0
C 8 128 12179 16.85 2493 2504 574.0
D 2 14 1103007 1726.6 2475 2410 637.4
D 1 52 399537 623.01 2475 2410 637.4
D 6 225 105487 161.71 2475 2410 637.4

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