ASTROSAT CZTI

Data Quality Report

Orbit 21746

Creation date: 2024-06-27T18:31:45.506848
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/AS1A07_005T01_9000003224_21746cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21746cztM0_level2_quad_clean.evt
Size (bytes)203,852,16032,618,880
Size194.4 MB 31.1 MB
Events in quadrant A1,333,425195,650
Events in quadrant B1,563,422196,240
Events in quadrant C1,349,307193,168
Events in quadrant D1,714,999182,364

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093083238
B0101443554
C091563094
D0114234364

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014002818401780046
B0-1-1
C0-1-1
D0-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A301430.099536%
B2983301.005699%
C3026100.330469%
D2937230.783112%

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 4597 3368 0 0 0.00% 0.00%
B 4588 3297 15 15 0.33% 0.45%
C 4596 3361 0 0 0.00% 0.00%
D 4583 3294 16 16 0.35% 0.49%

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 6862 92.34 342 335 70.7
A 13 254 5180 68.55 342 335 70.7
A 13 252 3319 42.22 342 335 70.7
B 3 64 141240 2121.26 338 329 66.4
B 0 230 30158 449.04 338 329 66.4
B 0 190 26747 397.69 338 329 66.4
C 14 238 51850 650.61 332 335 79.2
C 13 61 2378 25.8 332 335 79.2
C 15 78 827 6.21 332 335 79.2
D 1 52 223383 2736.37 328 319 81.5
D 7 238 130631 1598.56 328 319 81.5
D 13 153 36873 448.42 328 319 81.5

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