ASTROSAT CZTI

Data Quality Report

Orbit 19654

Creation date: 2024-06-27T18:05:15.121153
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/AS1A06_003T02_9000002926_19654cztM0_level2.evt modeM0/AS1A06_003T02_9000002926_19654cztM0_level2_quad_clean.evt
Size (bytes)452,609,28093,392,640
Size431.6 MB 89.1 MB
Events in quadrant A2,988,241613,406
Events in quadrant B3,177,082626,432
Events in quadrant C3,042,243589,815
Events in quadrant D4,073,055560,536

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129582
B0134522
C0130542
D0164292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6283180.286487%
B6283500.795798%
C6283430.684386%
D62822954.695957%

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 7543 6284 1 1 0.01% 0.02%
B 7543 6284 17 17 0.23% 0.27%
C 7543 6284 0 0 0.00% 0.00%
D 7542 6283 286 286 3.79% 4.55%

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 11 29 7584 44.14 774 759 154.6
A 0 226 6682 38.31 774 759 154.6
A 3 137 5976 33.74 774 759 154.6
B 7 220 52053 349.72 778 760 146.7
B 4 80 26803 177.56 778 760 146.7
B 3 112 21371 140.53 778 760 146.7
C 14 238 118031 678.0 745 752 173.0
C 3 233 18078 100.16 745 752 173.0
C 13 61 5303 26.31 745 752 173.0
D 1 52 368225 2071.5 731 709 177.4
D 12 218 359213 2020.7 731 709 177.4
D 12 225 326053 1833.8 731 709 177.4

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