ASTROSAT CZTI

Data Quality Report

Orbit 46753

Creation date: 2024-06-27T23:27:13.334214
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/AS1A13_092T17_9000006262_46753cztM0_level2.fits modeM0/AS1A13_092T17_9000006262_46753cztM0_level2_quad_clean.evt
Size (bytes)502,640,640112,374,720
Size479.4 MB 107.2 MB
Events in quadrant A6,881,154726,582
Events in quadrant B3,743,651763,035
Events in quadrant C3,232,669745,513
Events in quadrant D4,192,373668,135

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251591
B0159261
C0150231
D0176911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71683194.450335%
B71681682.343750%
C7169540.753243%
D71692833.947552%

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 7678 7168 47 47 0.61% 0.66%
B 7678 7168 29 29 0.38% 0.40%
C 7679 7171 11 11 0.14% 0.15%
D 7679 7171 242 242 3.15% 3.37%

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 10 83 3499033 20926.1 796 779 167.2
A 13 248 128964 766.79 796 779 167.2
A 9 191 124384 739.39 796 779 167.2
B 3 112 188456 1167.3 804 778 160.8
B 15 201 112466 694.67 804 778 160.8
B 5 172 72545 446.37 804 778 160.8
C 14 254 63074 329.32 793 797 189.1
C 3 233 37757 195.45 793 797 189.1
C 12 2 37270 192.87 793 797 189.1
D 13 249 929092 4674.55 778 754 198.6
D 1 52 106912 534.55 778 754 198.6
D 2 249 53472 265.46 778 754 198.6

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