ASTROSAT CZTI

Data Quality Report

Orbit 23534

Creation date: 2024-06-27T18:55:49.557183
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/AS1A07_011T01_9000003482_23534cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23534cztM0_level2_quad_clean.evt
Size (bytes)1,441,336,320320,402,880
Size1.3 GB 305.6 MB
Events in quadrant A9,574,3512,097,866
Events in quadrant B10,873,9102,127,464
Events in quadrant C9,862,7552,045,293
Events in quadrant D11,931,1731,999,346

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04240
B04240
C04240
D04240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0426204
B0462696
C0432409
D0505826

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A208391130.542253%
B208382791.338900%
C208372381.142199%
D208396843.282307%

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 37954 20842 3 3 0.01% 0.01%
B 37954 20840 97 97 0.26% 0.47%
C 37954 20840 4 4 0.01% 0.02%
D 37955 20842 406 406 1.07% 1.95%

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 13 254 36646 69.42 2475 2420 493.0
A 10 253 28463 52.82 2475 2420 493.0
A 3 137 21472 38.64 2475 2420 493.0
B 0 189 609845 1321.48 2463 2405 459.7
B 3 64 364281 787.26 2463 2405 459.7
B 0 229 90171 190.93 2463 2405 459.7
C 14 238 379902 689.17 2371 2390 547.8
C 7 247 151676 272.53 2371 2390 547.8
C 0 10 30408 51.15 2371 2390 547.8
D 9 85 1629792 2842.3 2377 2308 572.6
D 1 52 982854 1712.46 2377 2308 572.6
D 12 233 115615 197.88 2377 2308 572.6

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