ASTROSAT CZTI

Data Quality Report

Orbit 22009

Creation date: 2024-06-27T18:35:15.109679
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_153T02_9000003250_22009cztM0_level2.evt modeM0/AS1A07_153T02_9000003250_22009cztM0_level2_quad_clean.evt
Size (bytes)1,037,384,640191,854,080
Size989.3 MB 183.0 MB
Events in quadrant A6,536,4501,240,934
Events in quadrant B6,918,1661,261,526
Events in quadrant C6,685,7441,192,419
Events in quadrant D10,332,4301,151,115

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02880
B02880
C02880
D02880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286482
B0295832
C0288072
D0403892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13966680.486897%
B139671621.159877%
C139671941.388988%
D139678195.863822%

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 15051 13969 0 0 0.00% 0.00%
B 15052 13969 17 17 0.11% 0.12%
C 15052 13968 2 2 0.01% 0.01%
D 15052 13969 552 552 3.67% 3.95%

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 3 1 42885 122.8 1678 1639 335.9
A 13 254 23507 65.1 1678 1639 335.9
A 15 236 20895 57.33 1678 1639 335.9
B 3 64 135786 420.8 1682 1635 318.8
B 0 230 84061 258.55 1682 1635 318.8
B 0 190 46114 139.52 1682 1635 318.8
C 14 238 254186 670.79 1618 1623 376.5
C 0 239 116870 306.09 1618 1623 376.5
C 13 61 11338 25.8 1618 1623 376.5
D 7 238 3368915 8755.5 1605 1560 384.6
D 1 52 740982 1922.58 1605 1560 384.6
D 2 234 60636 153.6 1605 1560 384.6

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