ASTROSAT CZTI

Data Quality Report

Orbit 41623

Creation date: 2024-06-27T22:30:50.986414
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_035T02_9000005680_41623cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41623cztM0_level2_quad_clean.evt
Size (bytes)613,828,80075,291,840
Size585.4 MB 71.8 MB
Events in quadrant A2,932,863612,484
Events in quadrant B2,591,124624,298
Events in quadrant C3,068,451579,820
Events in quadrant D13,703,45279,962

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120562
B0116282
C0124973
D0443652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5474170.310559%
B5474370.675923%
C54731663.033071%
D5473481187.904257%

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 7117 5475 5 5 0.07% 0.09%
B 7117 5475 10 10 0.14% 0.18%
C 7116 5474 166 166 2.33% 3.03%
D 7116 5473 4491 4491 63.11% 82.06%

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 518823 4191.25 602 591 123.6
A 13 248 37202 296.1 602 591 123.6
A 15 223 30532 242.15 602 591 123.6
B 0 186 169254 1445.84 598 579 116.7
B 5 255 50454 427.52 598 579 116.7
B 12 111 14864 122.45 598 579 116.7
C 0 10 455796 3337.96 581 583 136.4
C 15 214 239215 1749.83 581 583 136.4
C 14 254 58155 422.16 581 583 136.4
D 12 79 12064726 163492.61 300 290 73.8
D 13 249 170692 2309.22 300 290 73.8
D 2 120 150983 2042.13 300 290 73.8

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