ASTROSAT CZTI

Data Quality Report

Orbit 36389

Creation date: 2022-06-21T18:35:47.956370
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_097T24_9000005196_36389cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36389cztM0_level2_quad_clean.evt
Size (bytes)427,296,96050,040,000
Size407.5 MB 47.7 MB
Events in quadrant A2,862,711295,748
Events in quadrant B3,140,831293,440
Events in quadrant C2,933,789280,143
Events in quadrant D3,636,686267,465

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116833
B0125942
C0117092
D0143202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5398110.203779%
B5398470.870693%
C5398470.870693%
D53981843.408670%

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 7250 5399 1 1 0.01% 0.02%
B 7250 5399 19 19 0.26% 0.35%
C 7250 5399 31 31 0.43% 0.57%
D 7250 5399 175 175 2.41% 3.24%

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 190204 1384.64 681 670 136.9
A 7 3 14241 99.14 681 670 136.9
A 13 254 9489 64.43 681 670 136.9
B 5 172 178425 1397.21 667 650 127.2
B 0 189 100604 785.58 667 650 127.2
B 4 232 78295 610.25 667 650 127.2
C 15 214 230780 1537.18 648 653 149.7
C 0 10 163160 1085.5 648 653 149.7
C 0 207 13060 82.87 648 653 149.7
D 12 6 609106 3871.88 648 632 157.2
D 12 227 135687 859.39 648 632 157.2
D 13 249 105940 670.1 648 632 157.2

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