ASTROSAT CZTI

Data Quality Report

Orbit 15131

Creation date: 2024-06-27T17:04:25.158975
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/AS1G08_061T03_9000002228_15131cztM0_level2.evt modeM0/AS1G08_061T03_9000002228_15131cztM0_level2_quad_clean.evt
Size (bytes)549,290,88081,394,560
Size523.8 MB 77.6 MB
Events in quadrant A3,745,209491,797
Events in quadrant B3,935,051495,985
Events in quadrant C4,682,261481,684
Events in quadrant D3,756,813466,022

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159712
B0164571
C0191111
D0164491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76041381.814834%
B76041992.617044%
C76041221.604419%
D76041702.235665%

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 7895 7605 0 0 0.00% 0.00%
B 7895 7605 28 28 0.35% 0.37%
C 7895 7605 5 5 0.06% 0.07%
D 7895 7605 69 69 0.87% 0.91%

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 12 189 82060 420.22 938 914 193.1
A 15 239 52688 268.12 938 914 193.1
A 0 226 8264 38.06 938 914 193.1
B 4 48 93755 509.6 933 908 182.2
B 3 64 83034 450.76 933 908 182.2
B 0 230 23183 122.26 933 908 182.2
C 3 233 1131409 5291.07 904 909 213.7
C 0 207 12803 55.67 904 909 213.7
C 13 61 6524 26.28 904 909 213.7
D 13 172 184990 824.54 910 885 223.3
D 10 70 34993 152.76 910 885 223.3
D 2 234 30592 133.05 910 885 223.3

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