ASTROSAT CZTI

Data Quality Report

Orbit 25420

Creation date: 2024-06-27T19:17:28.214606
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/AS1A09_047T01_9000003714_25420cztM0_level2.evt modeM0/AS1A09_047T01_9000003714_25420cztM0_level2_quad_clean.evt
Size (bytes)548,233,92086,734,080
Size522.8 MB 82.7 MB
Events in quadrant A3,519,673573,491
Events in quadrant B3,034,718571,406
Events in quadrant C2,947,446546,890
Events in quadrant D6,696,409516,333

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141400
B0125890
C0125020
D0241510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5986550.918811%
B5987500.835143%
C5987661.102389%
D59874798.000668%

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 6996 5986 0 0 0.00% 0.00%
B 6997 5987 2 2 0.03% 0.03%
C 6997 5988 0 0 0.00% 0.00%
D 6997 5987 436 436 6.23% 7.28%

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 6 16 569549 3718.43 764 749 153.0
A 13 254 9605 57.89 764 749 153.0
A 3 137 6785 39.46 764 749 153.0
B 3 112 48841 337.68 746 727 142.5
B 0 229 40363 278.18 746 727 142.5
B 12 111 17036 114.46 746 727 142.5
C 14 238 116274 691.74 716 723 167.0
C 7 247 31865 186.43 716 723 167.0
C 2 16 5557 28.94 716 723 167.0
D 1 52 2359844 13501.49 721 700 174.7
D 7 238 711410 4067.43 721 700 174.7
D 8 195 569880 3257.44 721 700 174.7

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