ASTROSAT CZTI

Data Quality Report

Orbit 51160

Creation date: 2025-03-14T07:26:38.061218
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/AS1C07_001T01_9000006454_51160cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51160cztM0_level2_quad_clean.evt
Size (bytes)751,944,96089,000,640
Size717.1 MB 84.9 MB
Events in quadrant A12,970,506325,320
Events in quadrant B5,013,277698,112
Events in quadrant C5,151,085621,634
Events in quadrant D4,175,096577,617

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0431402
B0196352
C0201402
D0175262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6772373355.124040%
B67723014.444773%
C67723555.242174%
D67723094.562906%

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 7892 6772 3573 3573 45.27% 52.76%
B 7892 6773 186 186 2.36% 2.75%
C 7892 6773 315 315 3.99% 4.65%
D 7892 6773 297 297 3.76% 4.39%

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 14 254 5471634 40855.66 536 524 133.9
A 12 80 2608325 19473.82 536 524 133.9
A 12 3 1996515 14905.12 536 524 133.9
B 0 197 468464 3174.94 701 677 147.3
B 8 128 445616 3019.86 701 677 147.3
B 10 60 323009 2187.71 701 677 147.3
C 10 171 731537 3780.92 688 682 193.3
C 13 3 249629 1287.87 688 682 193.3
C 4 12 237933 1227.37 688 682 193.3
D 8 176 558559 2979.92 661 636 187.2
D 2 62 476156 2539.8 661 636 187.2
D 15 107 151805 807.41 661 636 187.2

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