ASTROSAT CZTI

Data Quality Report

Orbit 24646

Creation date: 2024-06-27T19:08:18.197605
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/AS1C05_012T06_9000003616_24646cztM0_level2.evt modeM0/AS1C05_012T06_9000003616_24646cztM0_level2_quad_clean.evt
Size (bytes)411,079,680117,679,680
Size392.0 MB 112.2 MB
Events in quadrant A2,828,725804,493
Events in quadrant B2,973,170810,762
Events in quadrant C3,336,389766,788
Events in quadrant D2,903,518763,417

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122311
B0126081
C0137211
D0125801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5996300.500334%
B5997440.733700%
C5997631.050525%
D5997260.433550%

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 7066 5996 0 0 0.00% 0.00%
B 7067 5997 6 6 0.08% 0.10%
C 7067 5997 2 2 0.03% 0.03%
D 7067 5998 11 11 0.16% 0.18%

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 13 254 9975 63.09 732 718 146.7
A 3 137 6432 38.94 732 718 146.7
A 0 226 6271 37.85 732 718 146.7
B 5 172 74615 537.91 721 703 137.4
B 15 32 28750 204.12 721 703 137.4
B 0 189 17068 119.1 721 703 137.4
C 7 247 495986 3092.06 690 692 160.2
C 14 238 112690 699.19 690 692 160.2
C 2 16 18091 108.62 690 692 160.2
D 7 238 77453 442.36 707 685 173.5
D 8 195 72460 413.59 707 685 173.5
D 1 52 54174 308.22 707 685 173.5

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