ASTROSAT CZTI

Data Quality Report

Orbit 15597

Creation date: 2024-06-27T17:10:55.302337
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/AS1A04_037T01_9000002312_15597cztM0_level2.evt modeM0/AS1A04_037T01_9000002312_15597cztM0_level2_quad_clean.evt
Size (bytes)1,086,975,360208,437,120
Size1.0 GB 198.8 MB
Events in quadrant A8,113,6271,326,956
Events in quadrant B7,556,1811,347,152
Events in quadrant C8,962,8541,286,146
Events in quadrant D7,237,2591,282,451

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341914
B0324763
C0362733
D0321703

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155241561.004896%
B155241200.772997%
C155243492.248132%
D155241030.663489%

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 17405 15527 47 47 0.27% 0.30%
B 17405 15527 11 11 0.06% 0.07%
C 17405 15526 95 95 0.55% 0.61%
D 17405 15528 25 25 0.14% 0.16%

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 0 253 853599 2282.74 1853 1811 373.1
A 4 2 93658 246.14 1853 1811 373.1
A 9 143 20696 50.61 1853 1811 373.1
B 0 189 72092 197.43 1856 1808 356.0
B 0 197 56970 154.95 1856 1808 356.0
B 12 111 41448 111.35 1856 1808 356.0
C 3 233 1658132 3954.67 1785 1797 418.8
C 14 238 274660 651.49 1785 1797 418.8
C 0 207 32053 72.24 1785 1797 418.8
D 4 95 78928 174.53 1820 1770 442.1
D 2 234 72353 159.66 1820 1770 442.1
D 10 70 54447 119.16 1820 1770 442.1

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