ASTROSAT CZTI

Data Quality Report

Orbit 30580

Creation date: 2024-06-27T20:17:15.078286
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/AS1A10_103T02_9000004406_30580cztM0_level2.evt modeM0/AS1A10_103T02_9000004406_30580cztM0_level2_quad_clean.evt
Size (bytes)1,292,725,440208,408,320
Size1.2 GB 198.8 MB
Events in quadrant A7,960,0441,339,122
Events in quadrant B12,461,2231,343,636
Events in quadrant C8,052,6701,282,243
Events in quadrant D9,609,0341,255,130

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337373
B0490373
C0333523
D0388283

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A158371691.067121%
B158373312.090042%
C158363592.266987%
D158363091.951250%

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 17947 15840 56 56 0.31% 0.35%
B 17947 15840 108 108 0.60% 0.68%
C 17946 15839 27 27 0.15% 0.17%
D 17946 15839 209 209 1.16% 1.32%

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 13 453748 1182.93 1913 1870 382.0
A 12 96 91603 234.9 1913 1870 382.0
A 8 192 35268 87.43 1913 1870 382.0
B 6 159 4360024 12034.23 1890 1837 362.1
B 6 36 337861 927.86 1890 1837 362.1
B 15 36 168620 460.54 1890 1837 362.1
C 14 238 341229 789.96 1842 1855 429.6
C 3 233 205641 474.35 1842 1855 429.6
C 0 10 181567 418.32 1842 1855 429.6
D 1 52 1397634 3160.98 1862 1813 441.6
D 12 227 418007 942.51 1862 1813 441.6
D 13 249 209897 471.23 1862 1813 441.6

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