ASTROSAT CZTI

Data Quality Report

Orbit 27416

Creation date: 2024-06-27T19:39:50.703241
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/AS1T03_249T01_9000003934_27416cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27416cztM0_level2_quad_clean.evt
Size (bytes)427,610,88077,351,040
Size407.8 MB 73.8 MB
Events in quadrant A2,839,534503,754
Events in quadrant B2,950,024509,102
Events in quadrant C3,064,124475,810
Events in quadrant D3,725,270471,299

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113950
B0118450
C0121280
D0144700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5460440.805861%
B5461591.080388%
C54601442.637363%
D54601723.150183%

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 6770 5461 1 1 0.01% 0.02%
B 6771 5462 1 1 0.01% 0.02%
C 6770 5461 75 75 1.11% 1.37%
D 6770 5461 124 124 1.83% 2.27%

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 13 254 8504 52.94 734 720 147.0
A 3 137 6563 39.74 734 720 147.0
A 0 226 6312 38.03 734 720 147.0
B 7 205 101017 732.81 721 704 136.9
B 12 111 16109 112.54 721 704 136.9
B 11 111 14744 102.57 721 704 136.9
C 2 16 247149 1520.88 693 698 162.0
C 14 238 113258 694.62 693 698 162.0
C 13 61 4729 24.88 693 698 162.0
D 1 52 706034 4289.54 701 685 164.4
D 2 250 297187 1803.16 701 685 164.4
D 2 120 58091 349.11 701 685 164.4

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