ASTROSAT CZTI

Data Quality Report

Orbit 27543

Creation date: 2024-06-27T19:41:18.176113
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/AS1A09_038T28_9000003952_27543cztM0_level2.evt modeM0/AS1A09_038T28_9000003952_27543cztM0_level2_quad_clean.evt
Size (bytes)389,044,80073,408,320
Size371.0 MB 70.0 MB
Events in quadrant A2,232,502488,893
Events in quadrant B2,388,519503,385
Events in quadrant C2,297,254479,974
Events in quadrant D4,556,950433,324

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094790
B0100130
C095880
D0166980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4512330.731383%
B4512761.684397%
C4512671.484929%
D451260313.364362%

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 5692 4513 11 11 0.19% 0.24%
B 5692 4512 15 15 0.26% 0.33%
C 5692 4512 7 7 0.12% 0.16%
D 5692 4512 500 500 8.78% 11.08%

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 6 16 28367 245.88 564 552 113.1
A 15 174 26820 232.2 564 552 113.1
A 13 254 7450 60.98 564 552 113.1
B 10 245 129164 1208.56 565 550 106.4
B 0 230 15597 141.39 565 550 106.4
B 15 32 14652 132.51 565 550 106.4
C 14 238 89994 695.09 552 555 128.7
C 2 16 35295 269.99 552 555 128.7
C 8 128 7652 55.16 552 555 128.7
D 1 52 2201745 17902.12 521 507 123.0
D 7 80 355314 2885.56 521 507 123.0
D 2 234 15816 124.5 521 507 123.0

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