ASTROSAT CZTI

Data Quality Report

Orbit 21450

Creation date: 2024-06-27T18:27:56.804855
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_140T01_9000003160_21450cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21450cztM0_level2_quad_clean.evt
Size (bytes)282,257,28049,763,520
Size269.2 MB 47.5 MB
Events in quadrant A2,044,756316,004
Events in quadrant B2,014,994321,284
Events in quadrant C2,021,790309,341
Events in quadrant D2,215,858300,195

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082821
B081451
C081691
D087891

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3677230.625510%
B3677250.679902%
C3677481.305412%
D3677210.571118%

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 3677 3677 0 0 0.00% 0.00%
B 3677 3677 3 3 0.08% 0.08%
C 3677 3677 0 0 0.00% 0.00%
D 3677 3677 14 14 0.38% 0.38%

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 11 47 82354 818.13 509 502 100.0
A 13 254 5493 49.89 509 502 100.0
A 0 226 4442 39.38 509 502 100.0
B 0 189 12072 123.45 504 494 93.8
B 0 230 11050 112.55 504 494 93.8
B 12 111 10730 109.14 504 494 93.8
C 14 238 79427 704.54 485 489 112.0
C 3 233 51089 451.62 485 489 112.0
C 13 61 3384 25.84 485 489 112.0
D 7 38 104197 871.5 494 480 119.0
D 12 235 86270 720.87 494 480 119.0
D 14 35 75266 628.4 494 480 119.0

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