ASTROSAT CZTI

Data Quality Report

Orbit 07365

Creation date: 2024-06-27T15:18:58.804207
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/AS1G06_157T02_9000001008_07365cztM0_level2.evt modeM0/AS1G06_157T02_9000001008_07365cztM0_level2_quad_clean.evt
Size (bytes)1,235,332,800218,764,800
Size1.2 GB 208.6 MB
Events in quadrant A8,437,5451,363,632
Events in quadrant B8,553,7281,393,029
Events in quadrant C8,434,7281,378,599
Events in quadrant D10,803,1791,284,231

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370685
B0371474
C0367514
D0442834

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03580
B03580
C03580
D03580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A174882591.481016%
B174881981.132205%
C174881390.794831%
D174888724.986276%

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 23394 17490 90 90 0.38% 0.51%
B 23394 17490 18 18 0.08% 0.10%
C 23394 17490 1 1 0.00% 0.01%
D 23394 17489 647 647 2.77% 3.70%

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 15 239 321120 753.23 2093 2050 423.6
A 15 234 28918 63.43 2093 2050 423.6
A 14 111 21351 45.56 2093 2050 423.6
B 0 214 160815 392.98 2119 2067 404.0
B 11 51 139696 340.7 2119 2067 404.0
B 12 111 40282 94.6 2119 2067 404.0
C 9 68 235124 487.95 2065 2074 477.6
C 8 229 98766 202.45 2065 2074 477.6
C 1 16 21133 39.9 2065 2074 477.6
D 1 52 1908557 3893.56 2012 1951 489.7
D 2 216 389007 790.42 2012 1951 489.7
D 2 14 327149 664.1 2012 1951 489.7

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