ASTROSAT CZTI

Data Quality Report

Orbit 06746

Creation date: 2024-06-27T15:11:12.035997
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/AS1G06_168T10_9000000932_06746cztM0_level2.evt modeM0/AS1G06_168T10_9000000932_06746cztM0_level2_quad_clean.evt
Size (bytes)552,032,64090,434,880
Size526.5 MB 86.2 MB
Events in quadrant A3,087,546591,945
Events in quadrant B3,303,340604,486
Events in quadrant C2,924,987594,430
Events in quadrant D6,970,770503,699

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135074
B0141533
C0131203
D0249293

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6355610.959874%
B63551171.841070%
C6355280.440598%
D6356149523.521082%

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 8835 6357 3 3 0.03% 0.05%
B 8835 6357 15 15 0.17% 0.24%
C 8835 6357 0 0 0.00% 0.00%
D 8836 6358 1282 1282 14.51% 20.16%

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 8 15 67705 425.97 764 747 157.2
A 13 251 40432 252.47 764 747 157.2
A 13 248 27081 167.53 764 747 157.2
B 4 48 102279 678.23 774 755 149.7
B 0 214 66954 442.24 774 755 149.7
B 4 81 44359 291.3 774 755 149.7
C 9 247 6381 32.35 746 749 174.1
C 13 61 5872 29.43 746 749 174.1
C 12 4 4930 24.02 746 749 174.1
D 2 33 3425500 21279.21 652 632 160.9
D 8 195 309055 1916.28 652 632 160.9
D 14 34 277880 1722.58 652 632 160.9

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