ASTROSAT CZTI

Data Quality Report

Orbit 43946

Creation date: 2024-06-27T22:57:31.118451
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_025T01_9000005920_43946cztM0_level2.fits modeM0/AS1A13_025T01_9000005920_43946cztM0_level2_quad_clean.evt
Size (bytes)1,545,739,200298,684,800
Size1.4 GB 284.8 MB
Events in quadrant A19,069,4461,845,722
Events in quadrant B10,370,9542,061,696
Events in quadrant C12,582,6361,983,470
Events in quadrant D13,681,3891,801,357

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0712163
B0441682
C0505692
D0539822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19595240812.288849%
B195956103.113039%
C195968734.454991%
D1959610435.322515%

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 20700 19597 1667 1667 8.05% 8.51%
B 20700 19597 125 125 0.60% 0.64%
C 20701 19598 614 614 2.97% 3.13%
D 20701 19598 700 700 3.38% 3.57%

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 15 222 6414214 14270.16 2147 2097 449.3
A 10 83 3099438 6893.13 2147 2097 449.3
A 15 223 1116817 2480.81 2147 2097 449.3
B 5 172 468374 1075.18 2199 2130 433.6
B 0 200 299631 686.05 2199 2130 433.6
B 4 171 259851 594.32 2199 2130 433.6
C 1 241 1820882 3592.28 2157 2168 506.3
C 15 158 1097981 2164.42 2157 2168 506.3
C 3 233 648433 1276.49 2157 2168 506.3
D 5 235 1019467 1832.71 2175 2108 555.1
D 7 204 566116 1016.02 2175 2108 555.1
D 1 52 553791 993.82 2175 2108 555.1

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