ASTROSAT CZTI

Data Quality Report

Orbit 38351

Creation date: 2024-06-27T21:51:35.022078
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_094T24_9000005374_38351cztM0_level2.fits modeM0/AS1A10_094T24_9000005374_38351cztM0_level2_quad_clean.evt
Size (bytes)922,757,760167,791,680
Size880.0 MB 160.0 MB
Events in quadrant A5,760,3961,187,809
Events in quadrant B6,165,1621,197,465
Events in quadrant C5,205,7031,165,438
Events in quadrant D16,197,201787,451

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238144
B0258263
C0221403
D0556253

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10720380.354478%
B107202432.266791%
C10720160.149254%
D10720295427.555970%

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 13525 10722 16 16 0.12% 0.15%
B 13525 10722 123 123 0.91% 1.15%
C 13525 10722 4 4 0.03% 0.04%
D 13525 10721 2812 2812 20.79% 26.23%

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 746471 3133.32 1182 1155 237.9
A 13 248 196323 820.49 1182 1155 237.9
A 12 189 129228 538.42 1182 1155 237.9
B 0 229 378220 1696.47 1175 1144 222.3
B 0 183 366679 1644.55 1175 1144 222.3
B 4 170 157382 702.92 1175 1144 222.3
C 15 214 458298 1689.07 1165 1171 270.6
C 14 254 52868 191.02 1165 1171 270.6
C 1 23 43648 156.95 1165 1171 270.6
D 10 203 8997479 35756.82 1035 1007 251.6
D 12 235 1355416 5383.15 1035 1007 251.6
D 2 16 664930 2638.79 1035 1007 251.6

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