ASTROSAT CZTI

Data Quality Report

Orbit 21960

Creation date: 2024-06-27T18:34:33.558562
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_130T01_9000003246_21960cztM0_level2.evt modeM0/AS1A07_130T01_9000003246_21960cztM0_level2_quad_clean.evt
Size (bytes)320,734,08049,924,800
Size305.9 MB 47.6 MB
Events in quadrant A1,993,173312,387
Events in quadrant B2,468,513317,959
Events in quadrant C2,017,551312,612
Events in quadrant D2,958,293283,146

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084911
B098631
C084511
D0114721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4044140.346192%
B40442446.033630%
C4044551.360040%
D40443588.852621%

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 5154 4045 0 0 0.00% 0.00%
B 5154 4045 167 167 3.24% 4.13%
C 5154 4044 0 0 0.00% 0.00%
D 5154 4045 314 314 6.09% 7.76%

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 2 79 27811 263.73 509 498 103.6
A 13 254 6757 60.44 509 498 103.6
A 0 226 4359 37.28 509 498 103.6
B 3 64 516981 5478.02 492 478 94.3
B 12 111 11273 114.49 492 478 94.3
B 0 229 11157 113.26 492 478 94.3
C 14 238 78082 664.43 496 501 116.8
C 13 61 3397 24.8 496 501 116.8
C 0 10 2023 13.03 496 501 116.8
D 13 174 901362 7666.83 484 470 117.5
D 2 136 128400 1088.72 484 470 117.5
D 1 52 102216 865.89 484 470 117.5

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