ASTROSAT CZTI

Data Quality Report

Orbit 47955

Creation date: 2024-08-10T12:34:05.390218
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/AS1A13_062T02_9000006384_47955cztM0_level2.fits modeM0/AS1A13_062T02_9000006384_47955cztM0_level2_quad_clean.evt
Size (bytes)612,676,80097,320,960
Size584.3 MB 92.8 MB
Events in quadrant A7,083,862653,011
Events in quadrant B2,744,419717,439
Events in quadrant C2,821,706686,569
Events in quadrant D9,559,227465,537

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251761
B0124091
C0126891
D0326101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60754497.390947%
B6076260.427913%
C6076220.362080%
D6076177229.163924%

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 7250 6076 237 237 3.27% 3.90%
B 7251 6077 0 0 0.00% 0.00%
C 7251 6077 4 4 0.06% 0.07%
D 7251 6076 1648 1648 22.73% 27.12%

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 10 83 3328158 23829.26 672 660 139.6
A 0 31 1159023 8295.4 672 660 139.6
A 3 137 7559 49.41 672 660 139.6
B 12 111 17196 122.47 690 670 134.9
B 11 111 16084 114.23 690 670 134.9
B 14 111 15403 109.19 690 670 134.9
C 14 254 97755 602.65 687 693 161.1
C 12 2 26161 158.13 687 693 161.1
C 12 249 9594 55.27 687 693 161.1
D 2 165 7036378 45719.81 617 601 153.9
D 11 224 76567 493.64 617 601 153.9
D 2 37 27167 172.63 617 601 153.9

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