ASTROSAT CZTI

Data Quality Report

Orbit 00898

Creation date: 2024-06-27T14:04:27.313072
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/AS1P01_161T05_9000000180_00898cztM0_level2.evt modeM0/AS1P01_161T05_9000000180_00898cztM0_level2_quad_clean.evt
Size (bytes)1,065,211,20071,763,840
Size1015.9 MB 68.4 MB
Events in quadrant A7,271,706446,612
Events in quadrant B9,378,668426,984
Events in quadrant C8,238,129441,660
Events in quadrant D6,965,324429,032

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259380
B0322430
C0288060
D0250650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A613470.114118%
B61344477.287251%
C6133220.358715%
D6134210.342354%

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 7409 6135 181 181 2.44% 2.95%
B 7409 6135 1042 1042 14.06% 16.98%
C 7408 6134 318 318 4.29% 5.18%
D 7409 6135 180 180 2.43% 2.93%

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 15 127 99384 221.61 1836 1856 440.1
A 14 170 88579 197.06 1836 1856 440.1
A 12 133 28748 61.11 1836 1856 440.1
B 3 0 1829257 4163.42 1892 1902 438.9
B 0 220 123426 276.88 1892 1902 438.9
B 0 187 71983 159.67 1892 1902 438.9
C 9 83 1043646 2110.81 1789 1856 493.5
C 9 54 124126 247.74 1789 1856 493.5
C 3 111 24413 45.7 1789 1856 493.5
D 1 4 168492 311.84 1728 1792 534.6
D 2 53 144977 267.86 1728 1792 534.6
D 13 169 68791 125.33 1728 1792 534.6

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