ASTROSAT CZTI

Data Quality Report

Orbit 41745

Creation date: 2024-06-27T22:32:20.451840
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_077T11_9000005696_41745cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41745cztM0_level2_quad_clean.evt
Size (bytes)449,035,20095,336,640
Size428.2 MB 90.9 MB
Events in quadrant A3,262,502649,740
Events in quadrant B2,782,648669,966
Events in quadrant C3,854,163605,013
Events in quadrant D6,262,657547,872

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130612
B0122422
C0151252
D0228356

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5922150.253293%
B5922230.388382%
C59232714.575384%
D59225178.730159%

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 9118 5924 5 5 0.05% 0.08%
B 9118 5922 12 12 0.13% 0.20%
C 9119 5923 254 254 2.79% 4.29%
D 9118 5922 528 528 5.79% 8.92%

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 580628 4190.58 668 654 138.4
A 15 223 41787 297.21 668 654 138.4
A 2 79 21187 148.36 668 654 138.4
B 5 255 85238 650.62 660 640 130.0
B 0 245 81821 624.34 660 640 130.0
B 12 111 16974 125.62 660 640 130.0
C 0 10 1070636 7265.13 629 632 147.3
C 15 214 251978 1706.59 629 632 147.3
C 14 254 71251 479.49 629 632 147.3
D 12 79 2395222 15387.67 628 610 155.6
D 12 6 442602 2840.22 628 610 155.6
D 13 249 359849 2308.45 628 610 155.6

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