ASTROSAT CZTI

Data Quality Report

Orbit 17502

Creation date: 2024-06-27T17:37:21.230474
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/AS1T03_068T01_9000002594_17502cztM0_level2.evt modeM0/AS1T03_068T01_9000002594_17502cztM0_level2_quad_clean.evt
Size (bytes)472,656,960104,676,480
Size450.8 MB 99.8 MB
Events in quadrant A3,501,053687,333
Events in quadrant B3,473,149687,558
Events in quadrant C3,400,877656,045
Events in quadrant D3,467,427655,425

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149732
B0146872
C0143412
D0150172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69471081.554628%
B69481121.611975%
C69481251.799079%
D6948961.381693%

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 7807 6948 14 14 0.18% 0.20%
B 7808 6949 14 14 0.18% 0.20%
C 7808 6948 0 0 0.00% 0.00%
D 7808 6949 11 11 0.14% 0.16%

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 15 174 206649 1204.34 850 830 170.9
A 13 210 16119 89.46 850 830 170.9
A 0 226 7541 39.27 850 830 170.9
B 7 220 84892 524.33 842 820 160.3
B 0 219 32849 199.75 842 820 160.3
B 4 216 31129 189.03 842 820 160.3
C 14 238 126528 668.3 813 818 188.1
C 5 218 60280 316.11 813 818 188.1
C 3 233 36638 190.43 813 818 188.1
D 13 189 129284 648.6 832 808 198.1
D 10 70 89068 445.57 832 808 198.1
D 7 238 26501 129.71 832 808 198.1

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