ASTROSAT CZTI

Data Quality Report

Orbit 19802

Creation date: 2024-06-27T18:07:11.405098
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_117T01_9000002958_19802cztM0_level2.evt modeM0/AS1A05_117T01_9000002958_19802cztM0_level2_quad_clean.evt
Size (bytes)555,425,280109,160,640
Size529.7 MB 104.1 MB
Events in quadrant A5,364,656704,861
Events in quadrant B3,478,865741,273
Events in quadrant C3,570,913711,608
Events in quadrant D3,966,845695,615

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203492
B0143672
C0144722
D0160862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64904396.764253%
B64901221.879815%
C64901181.818182%
D64901071.648690%

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 9220 6492 311 311 3.37% 4.79%
B 9220 6492 14 14 0.15% 0.22%
C 9220 6492 0 0 0.00% 0.00%
D 9220 6492 52 52 0.56% 0.80%

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 2161876 12996.28 833 816 166.3
A 0 226 6915 36.68 833 816 166.3
A 3 137 6434 33.79 833 816 166.3
B 7 220 90434 563.03 850 830 159.1
B 4 80 21186 127.91 850 830 159.1
B 0 230 18864 113.32 850 830 159.1
C 3 233 205867 1063.49 830 839 192.8
C 14 238 131029 675.3 830 839 192.8
C 13 61 5821 25.84 830 839 192.8
D 1 52 516102 2570.43 833 812 200.5
D 7 238 195271 970.02 833 812 200.5
D 2 184 50616 248.44 833 812 200.5

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