ASTROSAT CZTI

Data Quality Report

Orbit 08740

Creation date: 2024-06-27T15:36:34.317661
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/AS1G07_013T02_9000001216_08740cztM0_level2.evt modeM0/AS1G07_013T02_9000001216_08740cztM0_level2_quad_clean.evt
Size (bytes)403,678,08098,003,520
Size385.0 MB 93.5 MB
Events in quadrant A2,978,021644,708
Events in quadrant B2,884,932652,522
Events in quadrant C3,025,562638,934
Events in quadrant D2,931,863615,976

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128332
B0124991
C0130001
D0128001

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5950540.907563%
B5950380.638655%
C5950791.327731%
D5950651.092437%

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 7180 5950 4 4 0.06% 0.07%
B 7180 5950 3 3 0.04% 0.05%
C 7180 5950 36 36 0.50% 0.61%
D 7180 5950 14 14 0.19% 0.24%

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 13 251 209383 1465.16 709 693 142.4
A 15 174 20570 139.55 709 693 142.4
A 5 16 11005 72.39 709 693 142.4
B 4 48 37320 279.13 711 694 131.2
B 0 214 27236 202.28 711 694 131.2
B 0 219 18757 137.66 711 694 131.2
C 4 254 233495 1469.55 694 697 158.4
C 1 16 74522 466.02 694 697 158.4
C 14 234 7253 41.39 694 697 158.4
D 7 71 105992 595.89 694 674 176.7
D 2 152 43828 244.17 694 674 176.7
D 2 14 36579 203.15 694 674 176.7

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