ASTROSAT CZTI

Data Quality Report

Orbit 46838

Creation date: 2024-06-27T23:28:19.034210
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/AS1A13_053T01_9000006274_46838cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46838cztM0_level2_quad_clean.evt
Size (bytes)461,597,760102,542,400
Size440.2 MB 97.8 MB
Events in quadrant A5,815,922691,328
Events in quadrant B3,910,393707,803
Events in quadrant C2,735,348681,625
Events in quadrant D4,156,087601,762

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211381
B0155791
C0125211
D0162991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60452263.738627%
B60461873.092954%
C6046360.595435%
D60453325.492142%

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 7260 6046 42 42 0.58% 0.69%
B 7261 6047 53 53 0.73% 0.88%
C 7261 6047 3 3 0.04% 0.05%
D 7260 6046 264 264 3.64% 4.37%

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 3109819 21817.54 690 674 142.5
A 9 191 19821 134.36 690 674 142.5
A 13 254 10142 66.44 690 674 142.5
B 3 112 1124972 8472.85 685 665 132.7
B 5 172 20609 150.3 685 665 132.7
B 12 111 16584 119.97 685 665 132.7
C 1 241 59227 370.91 675 678 157.9
C 14 254 35431 220.16 675 678 157.9
C 12 249 6072 34.17 675 678 157.9
D 1 52 1096637 6664.9 661 640 164.4
D 13 249 253699 1538.88 661 640 164.4
D 10 181 182745 1107.4 661 640 164.4

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