ASTROSAT CZTI

Data Quality Report

Orbit 10685

Creation date: 2024-06-27T16:02:27.199239
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/AS1A03_097T01_9000001540_10685cztM0_level2.evt modeM0/AS1A03_097T01_9000001540_10685cztM0_level2_quad_clean.evt
Size (bytes)1,000,802,880157,190,400
Size954.4 MB 149.9 MB
Events in quadrant A5,911,9261,000,966
Events in quadrant B9,712,896990,824
Events in quadrant C5,597,9261,002,458
Events in quadrant D8,239,866900,392

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263374
B03729010
C0256023
D0332743

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12531740.590535%
B12530146111.660016%
C12531430.343149%
D125316775.402602%

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 13946 12533 2 2 0.01% 0.02%
B 13946 12533 996 996 7.14% 7.95%
C 13946 12533 1 1 0.01% 0.01%
D 13946 12532 537 537 3.85% 4.29%

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 15 239 252298 852.48 1459 1428 294.3
A 11 29 16563 51.43 1459 1428 294.3
A 0 226 13511 41.06 1459 1428 294.3
B 4 239 1920189 7221.63 1400 1364 265.7
B 0 85 1790468 6733.42 1400 1364 265.7
B 4 81 200698 750.21 1400 1364 265.7
C 14 234 15594 42.96 1430 1438 329.5
C 13 61 10694 28.09 1430 1438 329.5
C 8 222 5412 12.06 1430 1438 329.5
D 10 199 1578219 4849.36 1364 1327 325.2
D 2 16 474050 1453.75 1364 1327 325.2
D 8 195 320313 980.96 1364 1327 325.2

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