ASTROSAT CZTI

Data Quality Report

Orbit 33476

Creation date: 2024-06-27T20:49:13.164934
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/AS1A11_047T10_9000004802_33476cztM0_level2.evt modeM0/AS1A11_047T10_9000004802_33476cztM0_level2_quad_clean.evt
Size (bytes)963,106,560173,488,320
Size918.5 MB 165.5 MB
Events in quadrant A5,377,6311,140,383
Events in quadrant B7,900,9261,105,618
Events in quadrant C6,037,0161,115,800
Events in quadrant D9,057,1741,078,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237273
B0309473
C0249113
D0348973

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11772120.101937%
B117724583.890588%
C11772600.509684%
D117722422.055725%

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 16011 11775 0 0 0.00% 0.00%
B 16011 11775 335 335 2.09% 2.85%
C 16011 11775 35 35 0.22% 0.30%
D 16011 11775 201 201 1.26% 1.71%

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 22183 75.28 1379 1352 276.7
A 13 6 16473 54.64 1379 1352 276.7
A 7 192 14436 47.28 1379 1352 276.7
B 5 172 838746 3255.55 1351 1316 257.2
B 0 213 641054 2487.01 1351 1316 257.2
B 5 255 424685 1645.87 1351 1316 257.2
C 15 214 502289 1629.91 1332 1343 307.3
C 0 10 143770 463.41 1332 1343 307.3
C 1 23 46330 146.37 1332 1343 307.3
D 8 195 2617784 7323.76 1314 1286 357.3
D 2 250 491202 1371.31 1314 1286 357.3
D 2 120 233222 649.2 1314 1286 357.3

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