ASTROSAT CZTI

Data Quality Report

Orbit 04502

Creation date: 2024-06-27T14:43:01.034680
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/AS1G05_083T03_9000000566_04502cztM0_level2.evt modeM0/AS1G05_083T03_9000000566_04502cztM0_level2_quad_clean.evt
Size (bytes)498,153,60065,741,760
Size475.1 MB 62.7 MB
Events in quadrant A3,183,124404,671
Events in quadrant B4,410,575391,058
Events in quadrant C3,481,318389,124
Events in quadrant D3,599,808381,864

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132832
B0170051
C0143921
D0148321

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60641252.061346%
B60643916.447889%
C60642524.155673%
D60641672.753958%

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 7294 6065 7 7 0.10% 0.12%
B 7294 6065 218 218 2.99% 3.59%
C 7294 6065 179 179 2.45% 2.95%
D 7294 6065 94 94 1.29% 1.55%

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 0 13 215590 1396.41 750 734 153.9
A 0 118 42288 270.07 750 734 153.9
A 0 50 18326 114.34 750 734 153.9
B 10 16 1372877 9705.03 745 729 141.4
B 4 48 60573 423.27 745 729 141.4
B 15 204 41704 289.81 745 729 141.4
C 9 54 470599 2859.76 712 716 164.3
C 9 247 173259 1050.12 712 716 164.3
C 14 48 34425 205.16 712 716 164.3
D 14 34 569273 3035.3 710 697 187.3
D 13 235 192004 1021.28 710 697 187.3
D 5 239 48717 256.35 710 697 187.3

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