ASTROSAT CZTI

Data Quality Report

Orbit 50798

Creation date: 2025-02-17T23:03:04.037623
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/AS1C07_001T01_9000006450_50798cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50798cztM0_level2_quad_clean.evt
Size (bytes)536,088,96091,800,000
Size511.3 MB 87.5 MB
Events in quadrant A3,835,060603,213
Events in quadrant B3,328,471663,192
Events in quadrant C7,898,081545,686
Events in quadrant D4,304,269536,918

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154881
B0141891
C0278004
D0169571

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61742504.049239%
B61741642.656301%
C617467110.868157%
D61742824.567541%

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 7309 6174 125 125 1.71% 2.02%
B 7309 6174 42 42 0.57% 0.68%
C 7309 6174 579 579 7.92% 9.38%
D 7309 6174 177 177 2.42% 2.87%

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 8 38 129682 767.06 674 658 168.2
A 4 3 117130 692.44 674 658 168.2
A 11 3 106672 630.27 674 658 168.2
B 0 229 193551 1364.11 674 649 141.4
B 4 206 176780 1245.51 674 649 141.4
B 8 128 64877 454.19 674 649 141.4
C 5 10 3017898 17196.27 645 639 175.5
C 1 44 1084771 6178.79 645 639 175.5
C 13 3 259835 1477.24 645 639 175.5
D 2 216 425090 2362.21 652 629 179.7
D 2 249 205212 1138.54 652 629 179.7
D 2 153 135601 751.15 652 629 179.7

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