ASTROSAT CZTI

Data Quality Report

Orbit 17635

Creation date: 2024-06-27T17:38:57.209089
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/AS1A05_118T02_9000002612_17635cztM0_level2.evt modeM0/AS1A05_118T02_9000002612_17635cztM0_level2_quad_clean.evt
Size (bytes)528,719,04076,443,840
Size504.2 MB 72.9 MB
Events in quadrant A3,970,428452,623
Events in quadrant B3,869,386456,654
Events in quadrant C3,885,412439,439
Events in quadrant D3,768,876435,226

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166263
B0163403
C0161583
D0163393

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76231361.784075%
B76241642.151102%
C76242022.649528%
D76241411.849423%

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 7958 7625 22 22 0.28% 0.29%
B 7959 7626 18 18 0.23% 0.24%
C 7959 7626 0 0 0.00% 0.00%
D 7959 7626 32 32 0.40% 0.42%

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 14 237 345876 1800.44 940 919 191.6
A 0 226 8395 39.02 940 919 191.6
A 3 137 7041 31.95 940 919 191.6
B 7 220 83546 456.87 933 907 180.9
B 10 246 46819 253.83 933 907 180.9
B 0 230 30560 163.94 933 907 180.9
C 3 233 251730 1182.25 894 896 212.2
C 14 238 138660 649.32 894 896 212.2
C 5 218 12053 52.59 894 896 212.2
D 13 189 244176 1082.61 914 887 224.7
D 2 234 30669 132.53 914 887 224.7
D 10 70 23750 101.74 914 887 224.7

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