ASTROSAT CZTI

Data Quality Report

Orbit 21224

Creation date: 2024-06-27T18:25:12.349992
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/AS1A06_005T05_9000003136_21224cztM0_level2.evt modeM0/AS1A06_005T05_9000003136_21224cztM0_level2_quad_clean.evt
Size (bytes)1,912,466,880272,381,760
Size1.8 GB 259.8 MB
Events in quadrant A16,276,5391,597,507
Events in quadrant B11,137,1581,789,425
Events in quadrant C10,615,6881,720,255
Events in quadrant D18,389,6201,609,339

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0629574
B0474605
C0461284
D0698934

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04520
B04520
C04520
D04520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22256264711.893422%
B222562581.159238%
C222562921.312006%
D2225614976.726276%

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 25342 22259 2339 2339 9.23% 10.51%
B 25342 22259 56 56 0.22% 0.25%
C 25342 22259 7 7 0.03% 0.03%
D 25342 22260 1245 1245 4.91% 5.59%

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 15 236 6085219 12006.12 2549 2499 506.6
A 11 47 167496 325.67 2549 2499 506.6
A 5 16 103067 198.5 2549 2499 506.6
B 0 189 130549 249.25 2714 2646 513.1
B 3 64 105785 200.99 2714 2646 513.1
B 0 190 92015 174.16 2714 2646 513.1
C 14 238 404568 667.96 2586 2602 601.8
C 3 233 45846 71.86 2586 2602 601.8
C 0 10 36650 56.58 2586 2602 601.8
D 13 174 6341800 10212.39 2561 2490 620.7
D 7 238 959054 1540.99 2561 2490 620.7
D 1 20 351265 561.86 2561 2490 620.7

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