ASTROSAT CZTI

Data Quality Report

Orbit 01409

Creation date: 2024-06-27T14:12:15.429678
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/AS1G04_003T01_9000000234_01409cztM0_level2.evt modeM0/AS1G04_003T01_9000000234_01409cztM0_level2_quad_clean.evt
Size (bytes)1,279,465,920109,707,840
Size1.2 GB 104.6 MB
Events in quadrant A11,215,511697,075
Events in quadrant B9,884,239714,200
Events in quadrant C8,735,406704,526
Events in quadrant D8,422,622689,491

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385991
B0346630
C0312130
D0303130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74352012.703430%
B7435640.860794%
C743550.067249%
D7435260.349697%

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 7435 7435 1113 1113 14.97% 14.97%
B 7435 7435 621 621 8.35% 8.35%
C 7435 7435 296 296 3.98% 3.98%
D 7435 7435 329 329 4.43% 4.43%

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 2226766 3957.45 2322 2338 562.1
A 12 243 29764 48.79 2322 2338 562.1
A 15 233 20346 32.04 2322 2338 562.1
B 8 4 374070 647.45 2403 2417 574.0
B 12 52 100252 170.44 2403 2417 574.0
B 6 53 90763 153.9 2403 2417 574.0
C 15 241 282001 465.3 2147 2220 601.3
C 3 79 29786 45.84 2147 2220 601.3
C 3 111 28588 43.85 2147 2220 601.3
D 13 169 216932 324.69 2113 2193 661.4
D 9 53 116457 172.77 2113 2193 661.4
D 2 16 56413 81.98 2113 2193 661.4

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