ASTROSAT CZTI

Data Quality Report

Orbit 40449

Creation date: 2024-06-27T22:16:14.779029
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/AS1A12_022T01_9000005540_40449cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40449cztM0_level2_quad_clean.evt
Size (bytes)344,269,44085,282,560
Size328.3 MB 81.3 MB
Events in quadrant A2,692,858591,163
Events in quadrant B2,302,386603,922
Events in quadrant C2,652,863576,329
Events in quadrant D4,688,798445,730

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113343
B0104862
C0112032
D0175772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5215170.325983%
B521550.095877%
C5215290.556088%
D5215101419.443912%

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 7068 5216 3 3 0.04% 0.06%
B 7068 5216 0 0 0.00% 0.00%
C 7068 5216 22 22 0.31% 0.42%
D 7067 5215 297 297 4.20% 5.70%

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 10 83 471337 4076.25 564 554 115.5
A 12 189 11968 98.83 564 554 115.5
A 7 3 10285 84.26 564 554 115.5
B 3 112 70665 638.25 563 546 109.9
B 12 111 13745 120.14 563 546 109.9
B 11 111 12393 107.84 563 546 109.9
C 14 254 236456 1823.92 555 558 129.3
C 15 214 228096 1759.29 555 558 129.3
C 0 10 10588 77.55 555 558 129.3
D 12 227 1849721 14921.42 504 491 123.9
D 2 250 582402 4695.43 504 491 123.9
D 12 191 152954 1230.22 504 491 123.9

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