ASTROSAT CZTI

Data Quality Report

Orbit 28974

Creation date: 2024-06-27T19:58:41.612002
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/AS1A10_048T03_9000004154_28974cztM0_level2.evt modeM0/AS1A10_048T03_9000004154_28974cztM0_level2_quad_clean.evt
Size (bytes)1,953,892,800237,660,480
Size1.8 GB 226.7 MB
Events in quadrant A10,347,0741,486,126
Events in quadrant B10,789,6591,509,911
Events in quadrant C10,571,6461,456,001
Events in quadrant D26,016,2251,263,618

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0447194
B0458385
C0448144
D0922794

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04360
B04360
C04360
D04360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A215132401.115605%
B215122981.385273%
C215123371.566567%
D21512425919.798252%

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 31673 21519 28 28 0.09% 0.13%
B 31673 21518 51 51 0.16% 0.24%
C 31673 21519 3 3 0.01% 0.01%
D 31673 21518 3690 3690 11.65% 17.15%

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 12 210 119747 220.99 2628 2569 530.2
A 13 6 53052 95.21 2628 2569 530.2
A 1 113 39101 68.9 2628 2569 530.2
B 10 245 307230 607.29 2607 2538 501.7
B 10 246 114732 223.62 2607 2538 501.7
B 12 111 63053 120.61 2607 2538 501.7
C 14 238 406909 679.14 2535 2560 595.4
C 3 233 138662 228.6 2535 2560 595.4
C 2 16 59377 95.43 2535 2560 595.4
D 1 52 7550346 13615.73 2332 2272 554.4
D 8 195 4482434 8081.62 2332 2272 554.4
D 7 80 3140294 5660.58 2332 2272 554.4

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