ASTROSAT CZTI

Data Quality Report

Orbit 36424

Creation date: 2022-07-19T02:44:39.522399
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/AS1C07_009T01_9000005200_36424cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36424cztM0_level2_quad_clean.evt
Size (bytes)424,497,60095,042,880
Size404.8 MB 90.6 MB
Events in quadrant A2,561,592644,518
Events in quadrant B3,938,825623,431
Events in quadrant C2,864,614628,327
Events in quadrant D3,121,630601,702

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111823
B0153692
C0118162
D0130932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A543590.165593%
B54353165.814167%
C5435771.416743%
D54351202.207912%

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 6988 5436 1 1 0.01% 0.02%
B 6988 5436 186 186 2.66% 3.42%
C 6988 5436 53 53 0.76% 0.97%
D 6988 5436 86 86 1.23% 1.58%

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 187886 1540.86 608 596 121.5
A 13 254 9219 70.94 608 596 121.5
A 13 6 8726 66.89 608 596 121.5
B 5 172 674328 5932.5 592 575 113.6
B 5 255 492273 4329.48 592 575 113.6
B 0 189 150032 1315.99 592 575 113.6
C 0 10 308678 2259.11 591 595 136.4
C 15 214 231851 1695.75 591 595 136.4
C 0 207 13159 92.13 591 595 136.4
D 12 6 225035 1588.36 590 575 141.3
D 2 250 149968 1057.16 590 575 141.3
D 2 137 105892 745.26 590 575 141.3

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