ASTROSAT CZTI

Data Quality Report

Orbit 47296

Creation date: 2024-06-27T23:33:51.334714
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/AS1A13_025T01_9000006312_47296cztM0_level2.fits modeM0/AS1A13_025T01_9000006312_47296cztM0_level2_quad_clean.evt
Size (bytes)517,135,68092,741,760
Size493.2 MB 88.4 MB
Events in quadrant A7,570,308591,924
Events in quadrant B3,351,614654,068
Events in quadrant C2,806,280619,589
Events in quadrant D4,948,014521,726

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288822255
B014635630
C013317619
D0216562861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01284
B01282
C01284
D01286

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59035839.876334%
B61051712.800983%
C6113610.997873%
D592261210.334347%

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 7433 6135 287 287 3.86% 4.68%
B 7433 6292 66 66 0.89% 1.05%
C 7435 6288 4 4 0.05% 0.06%
D 7390 6089 360 360 4.87% 5.91%

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 3460825 25265.65 657 643 137.0
A 9 191 600587 4380.69 657 643 137.0
A 14 235 490738 3578.59 657 643 137.0
B 12 18 236291 1698.35 692 670 138.7
B 0 200 178800 1283.96 692 670 138.7
B 10 3 55125 392.51 692 670 138.7
C 14 254 76420 466.96 681 684 162.2
C 12 2 40129 243.2 681 684 162.2
C 3 233 16351 96.6 681 684 162.2
D 12 2 1590955 9928.11 632 611 160.2
D 6 112 661023 4122.78 632 611 160.2
D 11 192 75155 465.36 632 611 160.2

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