ASTROSAT CZTI

Data Quality Report

Orbit 41797

Creation date: 2024-06-27T22:32:56.126522
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_052T04_9000005700_41797cztM0_level2.fits modeM0/AS1A12_052T04_9000005700_41797cztM0_level2_quad_clean.evt
Size (bytes)280,609,92076,737,600
Size267.6 MB 73.2 MB
Events in quadrant A2,832,596507,200
Events in quadrant B2,100,726527,548
Events in quadrant C2,602,129490,840
Events in quadrant D2,485,518468,382

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0971

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011715409
B0975591
C01067583
D010852122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A46701082.312634%
B4708110.233645%
C47071312.783089%
D4689591.258264%

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 6338 4709 108 108 1.70% 2.29%
B 6338 4738 7 7 0.11% 0.15%
C 6338 4732 124 124 1.96% 2.62%
D 6338 4719 59 59 0.93% 1.25%

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 414423 3989.8 499 490 103.7
A 15 223 395977 3812.01 499 490 103.7
A 2 79 84374 808.54 499 490 103.7
B 4 141 27090 270.76 503 488 98.2
B 0 186 25950 259.16 503 488 98.2
B 15 85 16175 159.67 503 488 98.2
C 0 10 525814 4589.59 484 489 114.5
C 15 214 181831 1584.32 484 489 114.5
C 13 61 3335 24.86 484 489 114.5
D 12 6 141203 1154.79 492 477 121.9
D 13 249 125021 1022.0 492 477 121.9
D 15 217 119566 977.24 492 477 121.9

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