ASTROSAT CZTI

Data Quality Report

Orbit 43970

Creation date: 2024-06-27T22:57:49.621300
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_065T06_9000005924_43970cztM0_level2.fits modeM0/AS1A13_065T06_9000005924_43970cztM0_level2_quad_clean.evt
Size (bytes)504,374,400112,564,800
Size481.0 MB 107.4 MB
Events in quadrant A6,537,315712,570
Events in quadrant B3,534,549776,373
Events in quadrant C3,667,739746,360
Events in quadrant D4,376,272676,310

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250177
B0154042
C0159445
D0177567

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71347069.896271%
B71362603.643498%
C71352263.167484%
D71353014.218641%

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 7421 7138 385 385 5.19% 5.39%
B 7421 7139 36 36 0.49% 0.50%
C 7422 7139 33 33 0.44% 0.46%
D 7422 7139 133 133 1.79% 1.86%

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 15 223 1291803 7695.01 795 775 167.8
A 10 83 1089902 6491.61 795 775 167.8
A 14 238 981995 5848.44 795 775 167.8
B 5 172 168549 1029.33 812 784 163.0
B 0 213 54347 328.64 812 784 163.0
B 0 183 52926 319.92 812 784 163.0
C 14 254 359671 1876.95 807 809 191.2
C 15 157 115490 599.81 807 809 191.2
C 12 16 24281 122.77 807 809 191.2
D 7 204 167143 810.35 805 781 205.3
D 13 249 159707 774.13 805 781 205.3
D 4 222 148737 720.69 805 781 205.3

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