ASTROSAT CZTI

Data Quality Report

Orbit 06628

Creation date: 2024-06-27T15:09:28.823969
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/AS1A02_082T01_9000000898_06628cztM0_level2.evt modeM0/AS1A02_082T01_9000000898_06628cztM0_level2_quad_clean.evt
Size (bytes)464,178,24087,451,200
Size442.7 MB 83.4 MB
Events in quadrant A3,082,242562,764
Events in quadrant B3,250,278570,547
Events in quadrant C2,947,992550,628
Events in quadrant D4,344,614520,037

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133543
B0136962
C0130352
D0172502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6365390.612726%
B6365430.675570%
C6365200.314218%
D63651362.136685%

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 7655 6366 1 1 0.01% 0.02%
B 7655 6366 1 1 0.01% 0.02%
C 7655 6366 0 0 0.00% 0.00%
D 7655 6366 89 89 1.16% 1.40%

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 97084 614.18 775 758 156.8
A 0 226 7262 41.47 775 758 156.8
A 12 194 7124 40.59 775 758 156.8
B 0 219 139350 927.61 785 768 149.4
B 4 81 55438 365.94 785 768 149.4
B 12 111 15877 101.13 785 768 149.4
C 13 61 5906 29.23 754 760 176.1
C 12 4 5730 28.23 754 760 176.1
C 3 202 1878 6.35 754 760 176.1
D 8 195 814187 4498.72 742 718 180.8
D 2 136 283648 1564.69 742 718 180.8
D 2 16 234598 1293.43 742 718 180.8

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