ASTROSAT CZTI

Data Quality Report

Orbit 22551

Creation date: 2024-06-27T18:42:40.885139
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/AS1A07_148T05_9000003346_22551cztM0_level2.evt modeM0/AS1A07_148T05_9000003346_22551cztM0_level2_quad_clean.evt
Size (bytes)1,243,995,840188,386,560
Size1.2 GB 179.7 MB
Events in quadrant A8,491,2891,157,758
Events in quadrant B9,197,0161,177,605
Events in quadrant C8,736,1391,138,950
Events in quadrant D10,159,2171,116,512

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0352373
B0374603
C0359443
D0410973

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A161702111.304886%
B161703161.954236%
C161693031.873956%
D161693462.139897%

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 19930 16171 0 0 0.00% 0.00%
B 19930 16172 37 37 0.19% 0.23%
C 19928 16170 2 2 0.01% 0.01%
D 19929 16171 91 91 0.46% 0.56%

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 28162 59.21 2203 2162 439.1
A 0 226 19225 38.86 2203 2162 439.1
A 3 137 17568 35.09 2203 2162 439.1
B 15 33 615615 1525.62 2179 2126 402.1
B 12 111 47462 112.74 2179 2126 402.1
B 11 111 41984 99.12 2179 2126 402.1
C 14 238 342233 695.4 2133 2155 489.0
C 0 207 56731 111.6 2133 2155 489.0
C 0 10 24135 44.94 2133 2155 489.0
D 1 52 956533 1834.54 2158 2103 520.3
D 12 33 678502 1300.13 2158 2103 520.3
D 13 172 153998 291.96 2158 2103 520.3

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