ASTROSAT CZTI

Data Quality Report

Orbit 23727

Creation date: 2024-06-27T18:58:00.735714
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_027T06_9000003508_23727cztM0_level2.evt modeM0/AS1A07_027T06_9000003508_23727cztM0_level2_quad_clean.evt
Size (bytes)540,198,72075,041,280
Size515.2 MB 71.6 MB
Events in quadrant A3,524,019449,822
Events in quadrant B4,198,364448,492
Events in quadrant C3,670,514442,358
Events in quadrant D4,477,483429,154

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150023
B0168982
C0152542
D0178382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72151171.621622%
B72152313.201663%
C72151992.758143%
D72162042.827051%

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 8890 7216 0 0 0.00% 0.00%
B 8890 7216 44 44 0.49% 0.61%
C 8890 7216 1 1 0.01% 0.01%
D 8891 7217 86 86 0.97% 1.19%

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 13 254 13126 65.98 913 895 185.4
A 3 137 8175 39.27 913 895 185.4
A 0 226 7852 37.53 913 895 185.4
B 0 189 198925 1140.93 905 884 173.6
B 0 229 193403 1109.12 905 884 173.6
B 10 249 99843 570.11 905 884 173.6
C 14 238 137788 656.18 881 886 208.6
C 7 247 72763 344.51 881 886 208.6
C 9 244 14638 65.91 881 886 208.6
D 1 52 807311 3732.64 884 858 216.1
D 7 238 212374 978.99 884 858 216.1
D 8 195 45742 207.74 884 858 216.1

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