ASTROSAT CZTI

Data Quality Report

Orbit 17856

Creation date: 2024-06-27T17:41:43.180828
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/AS1A05_085T01_9000002658_17856cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17856cztM0_level2_quad_clean.evt
Size (bytes)1,156,878,720236,180,160
Size1.1 GB 225.2 MB
Events in quadrant A7,727,9961,527,060
Events in quadrant B7,961,8791,527,558
Events in quadrant C7,950,1871,485,379
Events in quadrant D10,238,9261,434,423

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03480
B03480
C03480
D03480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0348613
B0352073
C0349743
D0425373

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170972111.234135%
B170972631.538282%
C170962851.667057%
D170977734.521261%

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 18797 17098 0 0 0.00% 0.00%
B 18797 17098 14 14 0.07% 0.08%
C 18796 17099 0 0 0.00% 0.00%
D 18797 17099 533 533 2.84% 3.12%

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 0 226 17329 37.99 2007 1963 404.4
A 15 174 16217 35.24 2007 1963 404.4
A 3 137 15838 34.31 2007 1963 404.4
B 15 222 99805 254.49 2000 1947 384.5
B 12 111 47901 119.51 2000 1947 384.5
B 11 111 41077 101.76 2000 1947 384.5
C 14 238 297683 655.78 1923 1936 451.0
C 3 233 102333 222.62 1923 1936 451.0
C 5 218 48849 104.02 1923 1936 451.0
D 7 238 2703950 5804.31 1923 1868 465.5
D 2 234 83845 176.09 1923 1868 465.5
D 2 165 80080 168.01 1923 1868 465.5

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