ASTROSAT CZTI

Data Quality Report

Orbit 08176

Creation date: 2024-06-27T15:28:56.500558
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/AS1G07_043T01_9000001126_08176cztM0_level2.evt modeM0/AS1G07_043T01_9000001126_08176cztM0_level2_quad_clean.evt
Size (bytes)430,548,48086,048,640
Size410.6 MB 82.1 MB
Events in quadrant A3,120,479545,977
Events in quadrant B3,276,417550,117
Events in quadrant C2,869,812552,981
Events in quadrant D3,354,992528,014

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131572
B0134831
C0125423
D0138703

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61441011.643880%
B61441232.001953%
C6143711.155787%
D6143951.546476%

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 7304 6144 1 1 0.01% 0.02%
B 7304 6145 20 20 0.27% 0.33%
C 7304 6144 0 0 0.00% 0.00%
D 7304 6144 14 14 0.19% 0.23%

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 15 115347 737.46 763 748 155.4
A 15 79 61997 394.15 763 748 155.4
A 0 226 7427 42.98 763 748 155.4
B 5 255 140339 960.61 757 739 145.3
B 4 81 76584 521.9 757 739 145.3
B 10 16 46342 313.8 757 739 145.3
C 13 61 5635 28.91 735 737 169.4
C 12 4 2750 11.88 735 737 169.4
C 3 202 1971 7.28 735 737 169.4
D 13 122 326684 1794.85 740 717 181.6
D 2 136 85111 464.69 740 717 181.6
D 1 52 58650 318.99 740 717 181.6

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