ASTROSAT CZTI

Data Quality Report

Orbit 47687

Creation date: 2024-07-23T08:51:12.093897
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/AS1A13_082T01_9000006342_47687cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47687cztM0_level2_quad_clean.evt
Size (bytes)815,492,160182,453,760
Size777.7 MB 174.0 MB
Events in quadrant A11,580,2641,192,898
Events in quadrant B5,490,5041,250,673
Events in quadrant C5,053,2691,200,044
Events in quadrant D7,167,6891,079,478

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0418104
B0244012
C0235492
D0293612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115693362.904313%
B11570890.769231%
C11570520.449438%
D115703442.973207%

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 12904 11570 53 53 0.41% 0.46%
B 12905 11571 11 11 0.09% 0.10%
C 12905 11572 5 5 0.04% 0.04%
D 12905 11571 275 275 2.13% 2.38%

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 6358136 23720.02 1279 1249 268.0
A 9 191 253856 942.58 1279 1249 268.0
A 3 137 15411 52.84 1279 1249 268.0
B 0 200 193253 754.69 1285 1242 254.4
B 0 190 160355 625.39 1285 1242 254.4
B 12 111 33158 125.44 1285 1242 254.4
C 14 254 56743 183.27 1277 1281 302.6
C 12 250 15467 46.88 1277 1281 302.6
C 6 247 9848 28.31 1277 1281 302.6
D 12 2 1201306 3756.41 1264 1221 319.5
D 10 181 565857 1767.38 1264 1221 319.5
D 7 96 282283 879.76 1264 1221 319.5

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