ASTROSAT CZTI

Data Quality Report

Orbit 26188

Creation date: 2024-06-27T19:25:52.601154
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/AS1A09_012T03_9000003782_26188cztM0_level2.evt modeM0/AS1A09_012T03_9000003782_26188cztM0_level2_quad_clean.evt
Size (bytes)476,688,960137,773,440
Size454.6 MB 131.4 MB
Events in quadrant A3,239,330919,382
Events in quadrant B3,353,378938,257
Events in quadrant C3,401,543924,247
Events in quadrant D3,970,227907,278

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141240
B0142800
C0143530
D0162880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6948911.309729%
B69491101.582962%
C69491562.244927%
D69491462.101022%

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 7633 6949 0 0 0.00% 0.00%
B 7634 6950 0 0 0.00% 0.00%
C 7634 6950 2 2 0.03% 0.03%
D 7634 6950 80 80 1.05% 1.15%

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 13 254 10584 58.6 838 821 166.6
A 3 137 7655 41.02 838 821 166.6
A 0 226 7111 37.75 838 821 166.6
B 0 230 39447 247.7 832 813 156.0
B 0 190 29236 182.23 832 813 156.0
B 0 245 23784 147.28 832 813 156.0
C 14 238 133757 706.77 817 820 188.1
C 2 16 64556 338.86 817 820 188.1
C 3 233 20926 106.9 817 820 188.1
D 1 52 672939 3437.23 827 808 195.5
D 12 233 110647 561.71 827 808 195.5
D 2 120 36118 180.57 827 808 195.5

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