ASTROSAT CZTI

Data Quality Report

Orbit 14440

Creation date: 2024-06-27T16:55:11.926438
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/AS1G08_025T01_9000002130_14440cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14440cztM0_level2_quad_clean.evt
Size (bytes)536,774,40071,138,880
Size511.9 MB 67.8 MB
Events in quadrant A3,359,194436,425
Events in quadrant B3,444,764424,977
Events in quadrant C4,378,776417,239
Events in quadrant D4,626,790415,766

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143333
B0147252
C0173552
D0184062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6591801.213776%
B6591530.804127%
C65911161.759976%
D65912473.747535%

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 7597 6592 33 33 0.43% 0.50%
B 7597 6592 4 4 0.05% 0.06%
C 7597 6592 14 14 0.18% 0.21%
D 7597 6592 282 282 3.71% 4.28%

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 4 2 111597 666.94 816 797 166.1
A 8 15 76131 453.46 816 797 166.1
A 12 189 30366 177.99 816 797 166.1
B 0 229 58645 374.35 808 790 154.5
B 0 219 54016 344.4 808 790 154.5
B 0 189 52241 332.91 808 790 154.5
C 3 233 1257747 6908.87 784 788 181.9
C 14 234 38583 207.74 784 788 181.9
C 8 128 10464 53.18 784 788 181.9
D 12 110 1036679 5243.52 786 767 197.6
D 2 120 234086 1181.0 786 767 197.6
D 13 122 165933 836.03 786 767 197.6

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