ASTROSAT CZTI

Data Quality Report

Orbit 08750

Creation date: 2024-06-27T15:36:43.076032
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/AS1A03_038T01_9000001218_08750cztM0_level2.evt modeM0/AS1A03_038T01_9000001218_08750cztM0_level2_quad_clean.evt
Size (bytes)181,008,00021,723,840
Size172.6 MB 20.7 MB
Events in quadrant A1,299,631118,119
Events in quadrant B1,349,800117,587
Events in quadrant C1,212,757120,917
Events in quadrant D1,442,328115,721

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055066
B055813
C053255
D060021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2574662.564103%
B2575853.300971%
C2574401.554002%
D2576642.484472%

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 3301 2576 5 5 0.15% 0.19%
B 3301 2576 15 15 0.45% 0.58%
C 3301 2576 2 2 0.06% 0.08%
D 3301 2576 16 16 0.48% 0.62%

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 13 251 64489 949.21 317 309 67.6
A 5 16 6541 92.17 317 309 67.6
A 13 14 3739 50.73 317 309 67.6
B 10 16 89490 1383.37 319 311 64.5
B 0 214 7384 109.72 319 311 64.5
B 12 111 6990 103.61 319 311 64.5
C 1 16 13738 181.18 307 308 74.1
C 13 61 2389 28.07 307 308 74.1
C 8 222 1413 14.91 307 308 74.1
D 2 136 165138 2089.14 302 293 78.9
D 13 122 30175 378.71 302 293 78.9
D 1 52 29176 366.05 302 293 78.9

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