ASTROSAT CZTI

Data Quality Report

Orbit 39878

Creation date: 2024-06-27T22:09:47.751093
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/AS1A12_032T03_9000005502_39878cztM0_level2.fits modeM0/AS1A12_032T03_9000005502_39878cztM0_level2_quad_clean.evt
Size (bytes)337,872,96090,757,440
Size322.2 MB 86.6 MB
Events in quadrant A2,937,441606,007
Events in quadrant B2,777,991623,154
Events in quadrant C2,680,011602,497
Events in quadrant D3,695,324542,550

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120853
B0118932
C0111752
D0147342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5344410.767216%
B5344601.122754%
C5344150.280689%
D53441532.863024%

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 7077 5345 19 19 0.27% 0.36%
B 7077 5345 55 55 0.78% 1.03%
C 7077 5345 15 15 0.21% 0.28%
D 7077 5345 151 151 2.13% 2.83%

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 465654 3831.12 593 580 121.4
A 14 250 131187 1075.9 593 580 121.4
A 2 79 14377 113.66 593 580 121.4
B 0 183 179756 1555.3 594 577 115.2
B 0 230 75874 653.59 594 577 115.2
B 5 172 33693 287.45 594 577 115.2
C 15 214 224641 1631.29 591 595 137.3
C 14 254 81175 586.71 591 595 137.3
C 1 16 32233 230.36 591 595 137.3
D 1 47 756118 5280.76 582 566 143.1
D 12 227 320194 2233.97 582 566 143.1
D 13 171 90573 629.08 582 566 143.1

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