ASTROSAT CZTI

Data Quality Report

Orbit 10745

Creation date: 2024-06-27T16:03:13.573946
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/AS1A03_078T01_9000001546_10745cztM0_level2.evt modeM0/AS1A03_078T01_9000001546_10745cztM0_level2_quad_clean.evt
Size (bytes)742,245,120105,854,400
Size707.9 MB 101.0 MB
Events in quadrant A5,002,465676,039
Events in quadrant B4,401,243694,824
Events in quadrant C3,630,959699,437
Events in quadrant D8,910,617586,581

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021161758
B018859389
C016904317
D0338592013

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01646
C01642
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78806348.045685%
B79243734.707219%
C7936851.071069%
D7747181923.480057%

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 8377 8045 215 215 2.57% 2.67%
B 8377 8063 58 58 0.69% 0.72%
C 8377 8070 0 0 0.00% 0.00%
D 8377 7990 1260 1260 15.04% 15.77%

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 15 239 1232267 6416.82 928 906 191.9
A 15 223 73968 380.74 928 906 191.9
A 14 254 44753 228.49 928 906 191.9
B 4 239 502629 2668.81 952 925 188.0
B 0 214 101717 536.16 952 925 188.0
B 15 204 39603 205.75 952 925 188.0
C 13 61 6919 27.3 930 935 219.2
C 8 222 3002 9.43 930 935 219.2
C 3 254 2816 8.58 930 935 219.2
D 2 16 3632473 18491.38 807 783 196.4
D 12 233 1443971 7348.24 807 783 196.4
D 1 52 351999 1788.28 807 783 196.4

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