ASTROSAT CZTI

Data Quality Report

Orbit 27343

Creation date: 2024-06-27T19:39:05.586337
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/AS1T03_255T01_9000003922_27343cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27343cztM0_level2_quad_clean.evt
Size (bytes)501,356,160108,040,320
Size478.1 MB 103.0 MB
Events in quadrant A3,125,689758,836
Events in quadrant B3,296,225757,262
Events in quadrant C4,879,061666,051
Events in quadrant D3,502,729698,381

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128980
B0133670
C0181750
D0140670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55971282.286939%
B55981442.572347%
C559881614.576635%
D55981683.001072%

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 6897 5597 6 6 0.09% 0.11%
B 6898 5598 14 14 0.20% 0.25%
C 6898 5598 474 474 6.87% 8.47%
D 6898 5598 56 56 0.81% 1.00%

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 14 235 48694 302.62 797 786 158.3
A 13 254 9334 53.99 797 786 158.3
A 0 226 6891 38.56 797 786 158.3
B 5 172 140631 950.88 777 759 147.1
B 7 205 73515 494.61 777 759 147.1
B 0 190 23651 155.62 777 759 147.1
C 2 16 1282944 7864.45 704 709 163.0
C 8 208 726507 4451.6 704 709 163.0
C 14 238 114996 700.97 704 709 163.0
D 1 52 315003 1677.97 755 738 187.3
D 2 250 208072 1107.03 755 738 187.3
D 2 120 44820 235.37 755 738 187.3

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