ASTROSAT CZTI

Data Quality Report

Orbit 38619

Creation date: 2024-06-27T21:54:11.520020
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/AS1A12_052T04_9000005388_38619cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38619cztM0_level2_quad_clean.evt
Size (bytes)503,832,96090,682,560
Size480.5 MB 86.5 MB
Events in quadrant A3,607,652618,257
Events in quadrant B3,668,147644,987
Events in quadrant C3,933,316607,230
Events in quadrant D7,037,220510,188

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137963
B0142282
C0149332
D0245502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52083176.086790%
B52083136.009985%
C52083687.066052%
D520997218.660012%

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 7060 5209 304 304 4.31% 5.84%
B 7060 5208 246 246 3.48% 4.72%
C 7060 5209 338 338 4.79% 6.49%
D 7061 5209 1049 1049 14.86% 20.14%

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 15 223 785626 6530.47 605 592 120.2
A 10 83 396764 3295.64 605 592 120.2
A 12 189 23694 192.18 605 592 120.2
B 4 171 760877 6625.65 607 591 114.7
B 4 251 202297 1757.8 607 591 114.7
B 5 184 169687 1473.62 607 591 114.7
C 14 254 1359711 9929.15 597 601 136.9
C 15 214 210580 1534.03 597 601 136.9
C 0 10 22077 156.9 597 601 136.9
D 12 227 1371049 9801.57 571 554 139.8
D 2 249 1103681 7889.4 571 554 139.8
D 2 250 507496 3625.57 571 554 139.8

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