ASTROSAT CZTI

Data Quality Report

Orbit 28509

Creation date: 2024-06-27T19:52:31.009572
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_110T05_9000004098_28509cztM0_level2.evt modeM0/AS1A10_110T05_9000004098_28509cztM0_level2_quad_clean.evt
Size (bytes)1,004,477,760204,511,680
Size957.9 MB 195.0 MB
Events in quadrant A6,012,1001,345,340
Events in quadrant B6,156,0451,372,808
Events in quadrant C6,430,6441,319,059
Events in quadrant D10,929,8681,245,513

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267903
B0269803
C0276063
D0416433

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13190610.462472%
B13191930.705026%
C131912151.629899%
D1319110658.073687%

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 14930 13192 0 0 0.00% 0.00%
B 14931 13192 9 9 0.06% 0.07%
C 14931 13192 1 1 0.01% 0.01%
D 14931 13193 859 859 5.75% 6.51%

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 21274 63.33 1553 1516 312.0
A 3 137 15782 45.73 1553 1516 312.0
A 0 226 13086 37.09 1553 1516 312.0
B 15 33 42547 139.75 1544 1503 293.7
B 12 111 37706 123.26 1544 1503 293.7
B 11 111 33878 110.23 1544 1503 293.7
C 14 238 326662 935.59 1488 1496 347.6
C 14 254 125172 355.85 1488 1496 347.6
C 3 233 83710 236.55 1488 1496 347.6
D 1 52 2478402 7191.2 1454 1413 344.4
D 8 195 1836053 5326.33 1454 1413 344.4
D 12 233 774993 2245.86 1454 1413 344.4

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