ASTROSAT CZTI

Data Quality Report

Orbit 20220805_A09_038T01_9000005276_level2

Creation date: 2022-08-06T12:25:07.625174
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/AS1A09_038T01_9000005276cztM0_level2_bc.evt modeM0/AS1A09_038T01_9000005276cztM0_level2_quad_clean.evt
Size (bytes)285,353,280108,063,360
Size272.1 MB 103.1 MB
Events in quadrant A1,399,700762,751
Events in quadrant B2,321,930722,596
Events in quadrant C1,555,059762,912
Events in quadrant D2,965,078621,534

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118590
B0170580
C0122380
D0213440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A575260.104312%
B575276313.264951%
C5752470.817107%
D5752129322.479138%

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 7875 5753 0 0 0.00% 0.00%
B 7875 5751 21 21 0.27% 0.37%
C 7875 5752 2 2 0.03% 0.03%
D 7875 5747 54 54 0.69% 0.94%

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 203294 2891.19 304 298 70.2
A 13 254 7692 105.31 304 298 70.2
A 13 6 7127 97.26 304 298 70.2
B 5 184 675022 11478.98 287 282 58.8
B 5 172 309110 5253.92 287 282 58.8
B 5 200 74247 1258.33 287 282 58.8
C 15 214 225229 3205.73 300 299 70.2
C 0 10 87527 1243.19 300 299 70.2
C 10 20 40343 570.71 300 299 70.2
D 12 17 565718 8866.91 260 251 63.8
D 6 112 477479 7483.26 260 251 63.8
D 2 250 265959 4166.48 260 251 63.8

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