ASTROSAT CZTI

Data Quality Report

Orbit 40401

Creation date: 2024-06-27T22:15:37.852118
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/AS1A12_056T02_9000005538_40401cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40401cztM0_level2_quad_clean.evt
Size (bytes)2,661,500,160543,931,200
Size2.5 GB 518.7 MB
Events in quadrant A18,639,4593,859,848
Events in quadrant B28,092,0823,843,973
Events in quadrant C16,795,1213,804,055
Events in quadrant D32,384,3262,641,088

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0755428
B01068337
C0703068
D01190977

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0930
B0930
C0930
D0930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06880
B06880
C06880
D06880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A337532780.823630%
B3375318755.555062%
C33752700.207395%
D33753916327.147217%

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 44964 33760 177 177 0.39% 0.52%
B 44964 33760 1102 1102 2.45% 3.26%
C 44964 33759 40 40 0.09% 0.12%
D 44965 33755 4582 4582 10.19% 13.57%

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 2602379 3378.11 3800 3729 769.3
A 13 248 722425 934.27 3800 3729 769.3
A 9 143 292649 375.58 3800 3729 769.3
B 7 202 10437663 14846.73 3716 3617 702.8
B 4 170 1832925 2602.94 3716 3617 702.8
B 4 171 519473 734.02 3716 3617 702.8
C 15 214 1449910 1693.25 3711 3744 854.1
C 9 54 395014 458.12 3711 3744 854.1
C 14 254 130486 148.4 3711 3744 854.1
D 12 227 14799878 18601.11 3263 3179 795.5
D 2 250 1358286 1703.52 3263 3179 795.5
D 12 191 987057 1236.84 3263 3179 795.5

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