ASTROSAT CZTI

Data Quality Report

Orbit 37373

Creation date: 2024-06-27T21:39:08.738166
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/AS1T05_048T01_9000005318_37373cztM0_level2.evt modeM0/AS1T05_048T01_9000005318_37373cztM0_level2_quad_clean.evt
Size (bytes)426,767,04065,808,000
Size407.0 MB 62.8 MB
Events in quadrant A2,722,047408,778
Events in quadrant B2,967,738417,318
Events in quadrant C2,896,948412,909
Events in quadrant D3,975,432379,852

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114423
B0122542
C0117642
D0154012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5339290.543173%
B53391112.079041%
C5339691.292377%
D53392224.158082%

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 7132 5340 18 18 0.25% 0.34%
B 7132 5340 75 75 1.05% 1.40%
C 7132 5340 52 52 0.73% 0.97%
D 7132 5340 192 192 2.69% 3.60%

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 277699 2262.03 611 599 122.5
A 13 248 31407 251.49 611 599 122.5
A 13 6 15589 122.37 611 599 122.5
B 5 255 266870 2263.09 612 596 117.7
B 5 172 95874 809.78 612 596 117.7
B 0 190 32775 273.49 612 596 117.7
C 15 214 225842 1605.3 598 603 140.3
C 14 254 148607 1054.84 598 603 140.3
C 0 10 101198 716.95 598 603 140.3
D 12 227 675531 4689.77 586 568 143.9
D 2 249 424328 2944.36 586 568 143.9
D 12 235 356031 2469.82 586 568 143.9

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