ASTROSAT CZTI

Data Quality Report

Orbit 11898

Creation date: 2024-06-27T16:19:42.138803
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/AS1A04_130T01_9000001762_11898cztM0_level2.evt modeM0/AS1A04_130T01_9000001762_11898cztM0_level2_quad_clean.evt
Size (bytes)508,521,60085,861,440
Size485.0 MB 81.9 MB
Events in quadrant A3,935,398550,567
Events in quadrant B4,321,893537,266
Events in quadrant C2,927,892557,430
Events in quadrant D3,798,113525,221

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158653
B0167362
C0126892
D0150722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61541462.372441%
B61544827.832304%
C6154190.308742%
D61541041.689958%

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 7485 6156 41 41 0.55% 0.67%
B 7485 6156 329 329 4.40% 5.34%
C 7485 6156 0 0 0.00% 0.00%
D 7485 6156 87 87 1.16% 1.41%

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 14 63 707231 4612.37 757 742 153.2
A 1 162 117923 765.03 757 742 153.2
A 1 178 59403 382.97 757 742 153.2
B 4 239 1201409 8546.18 743 727 140.5
B 15 204 72383 510.03 743 727 140.5
B 3 64 41699 291.63 743 727 140.5
C 8 128 7402 38.58 746 753 172.3
C 13 61 5338 26.61 746 753 172.3
C 8 112 4280 20.47 746 753 172.3
D 8 195 521296 2663.54 728 715 195.4
D 12 233 181104 922.96 728 715 195.4
D 5 222 83135 421.7 728 715 195.4

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