ASTROSAT CZTI

Data Quality Report

Orbit 01225

Creation date: 2024-06-27T14:09:24.568689
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_9000000222_01225cztM0_level2.evt modeM0/AS1G04_003T01_9000000222_01225cztM0_level2_quad_clean.evt
Size (bytes)1,110,453,120101,393,280
Size1.0 GB 96.7 MB
Events in quadrant A7,865,140664,656
Events in quadrant B8,152,011661,611
Events in quadrant C7,935,475648,647
Events in quadrant D9,238,000632,946

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281222
B0289171
C0282571
D0321631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6650130.195489%
B6650350.526316%
C6650110.165414%
D6650911.368421%

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 7660 6651 159 159 2.08% 2.39%
B 7660 6651 198 198 2.58% 2.98%
C 7660 6650 139 139 1.81% 2.09%
D 7660 6651 811 811 10.59% 12.19%

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 3 80 162482 336.79 1990 2005 476.5
A 15 127 53285 107.62 1990 2005 476.5
A 12 243 9428 15.58 1990 2005 476.5
B 5 191 99114 198.19 2080 2091 489.6
B 15 22 46539 90.79 2080 2091 489.6
B 6 53 31730 60.54 2080 2091 489.6
C 15 241 340185 630.28 1930 1998 536.6
C 3 111 26289 45.27 1930 1998 536.6
C 3 79 19790 33.16 1930 1998 536.6
D 13 169 1768337 3111.13 1836 1901 567.8
D 12 22 288167 504.19 1836 1901 567.8
D 10 84 174683 304.31 1836 1901 567.8

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