ASTROSAT CZTI

Data Quality Report

Orbit 03664

Creation date: 2024-06-27T14:32:09.104501
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/AS1G05_191T01_9000000476_03664cztM0_level2.evt modeM0/AS1G05_191T01_9000000476_03664cztM0_level2_quad_clean.evt
Size (bytes)520,951,68078,238,080
Size496.8 MB 74.6 MB
Events in quadrant A3,373,423484,768
Events in quadrant B3,526,535481,493
Events in quadrant C3,235,531475,787
Events in quadrant D5,185,261458,317

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144583
B0145622
C0140962
D0201032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67261141.694915%
B67261151.709783%
C6726881.308356%
D67263715.515908%

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 7681 6727 12 12 0.16% 0.18%
B 7681 6727 4 4 0.05% 0.06%
C 7681 6727 22 22 0.29% 0.33%
D 7681 6727 284 284 3.70% 4.22%

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 13 164 129563 769.58 823 807 167.3
A 0 50 24288 140.35 823 807 167.3
A 8 4 18226 104.11 823 807 167.3
B 0 182 85277 525.36 832 813 160.8
B 15 204 82562 508.47 832 813 160.8
B 4 81 54885 336.32 832 813 160.8
C 9 247 101153 541.8 797 801 185.2
C 12 4 13663 69.44 797 801 185.2
C 13 61 6708 31.89 797 801 185.2
D 13 172 1849514 9671.17 791 769 191.2
D 13 223 99513 516.55 791 769 191.2
D 12 110 62292 321.84 791 769 191.2

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
Veto Counter