ASTROSAT CZTI

Data Quality Report

Orbit 19635

Creation date: 2024-06-27T18:05:00.792855
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/AS1A05_012T01_9000002918_19635cztM0_level2.evt modeM0/AS1A05_012T01_9000002918_19635cztM0_level2_quad_clean.evt
Size (bytes)188,496,00050,086,080
Size179.8 MB 47.8 MB
Events in quadrant A1,298,821339,038
Events in quadrant B1,469,930334,181
Events in quadrant C1,314,339323,292
Events in quadrant D1,435,600322,523

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057901
B062461
C057431
D061851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114057643022221646
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2758341.232777%
B27581033.734590%
C2758391.414068%
D2758331.196519%

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 2758 2758 3 3 0.11% 0.11%
B 2758 2758 42 42 1.52% 1.52%
C 2758 2758 2 2 0.07% 0.07%
D 2758 2758 17 17 0.62% 0.62%

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 5 16 37974 559.65 323 316 67.3
A 11 29 14654 213.08 323 316 67.3
A 13 254 3065 40.85 323 316 67.3
B 7 220 157443 2482.88 316 308 63.3
B 3 112 25192 393.19 316 308 63.3
B 4 216 13397 206.82 316 308 63.3
C 14 238 47992 640.91 307 309 74.4
C 3 233 41492 553.54 307 309 74.4
C 5 112 20733 274.52 307 309 74.4
D 1 52 71814 910.26 315 306 78.6
D 7 38 67644 857.18 315 306 78.6
D 13 172 29265 368.63 315 306 78.6

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