ASTROSAT CZTI

Data Quality Report

Orbit 26706

Creation date: 2024-06-27T19:31:57.105837
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/AS1A09_145T01_9000003848_26706cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26706cztM0_level2_quad_clean.evt
Size (bytes)470,076,48085,008,960
Size448.3 MB 81.1 MB
Events in quadrant A3,064,138569,501
Events in quadrant B3,025,057571,034
Events in quadrant C2,998,113543,312
Events in quadrant D4,779,524509,165

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121790
B0120000
C0119950
D0177570

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5440601.102941%
B5441671.231391%
C5441851.562213%
D544154610.034920%

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 6765 5441 3 3 0.04% 0.06%
B 6766 5442 3 3 0.04% 0.06%
C 6766 5442 7 7 0.10% 0.13%
D 6766 5442 395 395 5.84% 7.26%

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 0 13 75642 489.2 763 751 153.1
A 2 79 45688 293.54 763 751 153.1
A 13 254 8527 50.79 763 751 153.1
B 14 207 54856 380.75 748 734 142.1
B 0 189 30469 209.18 748 734 142.1
B 12 111 15914 106.79 748 734 142.1
C 14 238 118314 703.03 719 728 167.3
C 15 208 60033 354.58 719 728 167.3
C 3 233 10466 58.22 719 728 167.3
D 7 80 1805515 9448.08 704 690 191.0
D 1 52 125554 653.65 704 690 191.0
D 2 250 92208 479.09 704 690 191.0

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