ASTROSAT CZTI

Data Quality Report

Orbit 20220317_A10_123T09_9000005012_level2

Creation date: 2022-03-23T11:22:59.992393
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/AS1A10_123T09_9000005012cztM0_level2_bc.evt modeM0/AS1A10_123T09_9000005012cztM0_level2_quad_clean.evt
Size (bytes)2,125,661,760571,939,200
Size2.0 GB 545.4 MB
Events in quadrant A9,786,7373,582,778
Events in quadrant B13,991,4233,602,040
Events in quadrant C11,943,1293,616,313
Events in quadrant D25,487,7143,328,501

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09500
B09500
C09500
D09500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0952590
B01135450
C0977640
D01494380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01610
B01610
C01610
D01610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A46530740.159037%
B4653018573.990974%
C465302410.517945%
D4653024125.183752%

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 62599 46539 1 1 0.00% 0.00%
B 62599 46530 80 80 0.13% 0.17%
C 62599 46533 47 47 0.08% 0.10%
D 62599 46530 200 200 0.32% 0.43%

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 425653 821.62 2331 2291 515.3
A 13 6 113846 216.49 2331 2291 515.3
A 9 143 94504 178.96 2331 2291 515.3
B 5 172 3293889 7128.52 2322 2266 461.8
B 3 112 451944 973.85 2322 2266 461.8
B 0 190 314597 676.4 2322 2266 461.8
C 15 214 1824228 3454.9 2306 2282 527.4
C 0 10 555486 1049.02 2306 2282 527.4
C 14 67 293693 552.59 2306 2282 527.4
D 8 195 9746063 18075.08 2261 2189 539.1
D 2 249 1889852 3501.65 2261 2189 539.1
D 13 249 1195408 2213.45 2261 2189 539.1

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