ASTROSAT CZTI

Data Quality Report

Orbit 45186

Creation date: 2024-06-27T23:10:21.314580
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_049T05_9000006050_45186cztM0_level2.fits modeM0/AS1A13_049T05_9000006050_45186cztM0_level2_quad_clean.evt
Size (bytes)453,329,280102,772,800
Size432.3 MB 98.0 MB
Events in quadrant A4,977,937679,927
Events in quadrant B3,443,186711,850
Events in quadrant C2,868,412689,979
Events in quadrant D5,010,634598,585

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191911
B0141931
C0127811
D0191151

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61901592.568659%
B61891322.132816%
C6189570.920989%
D61904527.302100%

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 7165 6191 4 4 0.06% 0.06%
B 7164 6190 23 23 0.32% 0.37%
C 7164 6190 2 2 0.03% 0.03%
D 7165 6190 340 340 4.75% 5.49%

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 2205552 14977.05 710 695 147.2
A 0 243 10305 65.28 710 695 147.2
A 3 137 7812 48.34 710 695 147.2
B 4 170 265392 1906.88 709 688 138.8
B 3 112 129084 924.94 709 688 138.8
B 5 32 101303 724.81 709 688 138.8
C 3 233 46073 271.63 711 714 167.0
C 14 254 20432 118.08 711 714 167.0
C 12 2 17857 102.66 711 714 167.0
D 13 249 1308379 7674.08 688 668 170.4
D 13 171 227450 1330.83 688 668 170.4
D 2 249 139356 813.87 688 668 170.4

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