ASTROSAT CZTI

Data Quality Report

Orbit 20479

Creation date: 2024-06-27T18:15:51.870976
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/AS1A05_208T03_9000003026_20479cztM0_level2.evt modeM0/AS1A05_208T03_9000003026_20479cztM0_level2_quad_clean.evt
Size (bytes)471,481,92084,994,560
Size449.6 MB 81.1 MB
Events in quadrant A2,987,317557,352
Events in quadrant B3,268,701566,251
Events in quadrant C2,871,454543,244
Events in quadrant D4,754,463498,318

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127391
B0135881
C0123121
D0181541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5848510.872093%
B5849490.837750%
C5849440.752265%
D58494978.497179%

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 7078 5848 29 29 0.41% 0.50%
B 7079 5850 12 12 0.17% 0.21%
C 7079 5850 0 0 0.00% 0.00%
D 7079 5850 457 457 6.46% 7.81%

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 5 16 222736 1554.02 714 698 142.9
A 9 143 8181 52.37 714 698 142.9
A 13 254 6875 43.23 714 698 142.9
B 0 189 197007 1464.53 718 702 134.0
B 4 216 63832 470.98 718 702 134.0
B 0 190 51154 376.4 718 702 134.0
C 14 238 108261 658.61 697 701 163.3
C 0 207 18238 107.38 697 701 163.3
C 8 208 9265 52.44 697 701 163.3
D 7 38 1005311 6053.95 685 666 165.9
D 7 238 379867 2285.05 685 666 165.9
D 1 52 207161 1244.33 685 666 165.9

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