ASTROSAT CZTI

Data Quality Report

Orbit 25611

Creation date: 2024-06-27T19:19:31.568276
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_148T02_9000003728_25611cztM0_level2.evt modeM0/AS1A07_148T02_9000003728_25611cztM0_level2_quad_clean.evt
Size (bytes)555,042,24094,504,320
Size529.3 MB 90.1 MB
Events in quadrant A4,095,892594,915
Events in quadrant B3,920,179601,914
Events in quadrant C3,785,644569,405
Events in quadrant D4,482,423557,667

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167560
B0162590
C0160650
D0179190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77392813.630960%
B77392683.462980%
C77392883.721411%
D77392663.437137%

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 8019 7740 20 20 0.25% 0.26%
B 8019 7740 1 1 0.01% 0.01%
C 8019 7740 0 0 0.00% 0.00%
D 8019 7740 55 55 0.69% 0.71%

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 6 16 166971 843.31 974 952 196.9
A 8 192 133184 671.69 974 952 196.9
A 0 13 39815 197.41 974 952 196.9
B 0 219 73445 383.46 970 945 189.1
B 0 190 36653 188.86 970 945 189.1
B 12 111 23208 117.75 970 945 189.1
C 14 238 149446 677.13 930 932 219.3
C 3 233 11192 46.78 930 932 219.3
C 13 61 6254 24.26 930 932 219.3
D 1 52 424510 1846.34 944 914 229.4
D 8 195 302162 1313.06 944 914 229.4
D 13 174 104654 452.17 944 914 229.4

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