ASTROSAT CZTI

Data Quality Report

Orbit 34258

Creation date: 2022-07-18T15:21:04.017637
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_059T09_9000004888_34258cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34258cztM0_level2_quad_clean.evt
Size (bytes)478,563,84055,869,120
Size456.4 MB 53.3 MB
Events in quadrant A2,600,615332,520
Events in quadrant B3,865,989329,286
Events in quadrant C3,126,475330,929
Events in quadrant D4,525,191311,727

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113340
B0149820
C0125300
D0170350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A553150.090400%
B55313386.111011%
C5531591.066715%
D55312264.086060%

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 7203 5532 1 1 0.01% 0.02%
B 7203 5532 219 219 3.04% 3.96%
C 7203 5532 40 40 0.56% 0.72%
D 7203 5532 212 212 2.94% 3.83%

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 25587 187.07 660 648 133.3
A 9 143 13695 97.87 660 648 133.3
A 13 254 10101 70.91 660 648 133.3
B 5 172 1077933 8712.23 642 627 123.7
B 0 189 100675 809.09 642 627 123.7
B 4 251 65768 526.8 642 627 123.7
C 15 214 241369 1623.06 641 644 148.3
C 0 207 210068 1412.02 641 644 148.3
C 14 254 67750 452.45 641 644 148.3
D 8 195 938540 5850.38 638 618 160.3
D 7 80 746702 4653.77 638 618 160.3
D 13 249 97007 601.24 638 618 160.3

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