ASTROSAT CZTI

Data Quality Report

Orbit 10477

Creation date: 2024-06-27T15:59:42.273275
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/AS1A03_126T01_9000001512_10477cztM0_level2.evt modeM0/AS1A03_126T01_9000001512_10477cztM0_level2_quad_clean.evt
Size (bytes)408,456,00086,967,360
Size389.5 MB 82.9 MB
Events in quadrant A2,776,900554,563
Events in quadrant B3,076,217551,289
Events in quadrant C2,633,675565,344
Events in quadrant D3,504,506573,678

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244118
B0244120
C0244118
D0234110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02483213101
B02752514945
C02435312983
D02830413907

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03310
B03512
C03312
D0329

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5420290.535055%
B53101552.919021%
C5524120.217234%
D5908681.150982%

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 8804 6229 0 0 0.00% 0.00%
B 8802 6120 48 48 0.55% 0.78%
C 8804 6271 0 0 0.00% 0.00%
D 8804 6274 23 23 0.26% 0.37%

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 101994 740.6 669 654 136.8
A 3 80 53015 382.66 669 654 136.8
A 8 5 32832 235.16 669 654 136.8
B 4 239 382065 3055.1 658 641 124.8
B 0 187 37350 294.03 658 641 124.8
B 11 51 37265 293.35 658 641 124.8
C 13 61 4980 27.5 673 678 156.5
C 14 67 3308 16.81 673 678 156.5
C 8 222 2820 13.69 673 678 156.5
D 1 20 427285 2524.08 704 684 169.0
D 8 195 158377 933.03 704 684 169.0
D 12 233 89386 524.82 704 684 169.0

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