ASTROSAT CZTI

Data Quality Report

Orbit 37679

Creation date: 2024-06-27T21:43:00.835074
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/AS1A11_075T01_9000005342_37679cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37679cztM0_level2_quad_clean.evt
Size (bytes)406,356,48082,900,800
Size387.5 MB 79.1 MB
Events in quadrant A3,141,905539,847
Events in quadrant B2,874,320550,060
Events in quadrant C2,896,203548,175
Events in quadrant D3,052,849520,109

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125993
B0118162
C0116212
D0123852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5027300.596777%
B5027571.133877%
C5027420.835488%
D5027400.795703%

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 7059 5028 15 15 0.21% 0.30%
B 7058 5027 37 37 0.52% 0.74%
C 7058 5026 39 39 0.55% 0.78%
D 7058 5026 29 29 0.41% 0.58%

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 316479 2461.8 644 633 128.3
A 6 10 142605 1106.57 644 633 128.3
A 15 222 99394 769.77 644 633 128.3
B 15 85 157548 1314.79 640 625 119.4
B 5 172 109835 915.03 640 625 119.4
B 0 230 33200 272.93 640 625 119.4
C 15 214 230532 1568.11 636 640 146.6
C 0 10 113590 770.44 636 640 146.6
C 14 254 63049 425.7 636 640 146.6
D 2 249 176994 1160.06 635 619 152.0
D 13 249 130404 853.63 635 619 152.0
D 12 227 87104 568.83 635 619 152.0

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