ASTROSAT CZTI

Data Quality Report

Orbit 31709

Creation date: 2024-06-27T20:31:46.806303
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/AS1T04_034T01_9000004632_31709cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31709cztM0_level2_quad_clean.evt
Size (bytes)1,403,193,600182,557,440
Size1.3 GB 174.1 MB
Events in quadrant A9,298,4311,135,674
Events in quadrant B13,432,4061,139,931
Events in quadrant C9,247,2491,108,158
Events in quadrant D9,498,7751,100,654

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03100
B03100
C03100
D03100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371505
B0511413
C0366423
D0379173

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A151246954.595345%
B1512511417.543802%
C151255583.689256%
D151252371.566942%

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 17119 15127 382 382 2.23% 2.53%
B 17120 15128 640 640 3.74% 4.23%
C 17120 15128 242 242 1.41% 1.60%
D 17120 15128 130 130 0.76% 0.86%

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 2109190 5703.38 1840 1802 369.5
A 14 238 56508 148.05 1840 1802 369.5
A 13 254 28749 72.93 1840 1802 369.5
B 6 159 3886819 11216.45 1799 1748 346.4
B 4 80 1810936 5223.24 1799 1748 346.4
B 0 229 453599 1304.52 1799 1748 346.4
C 3 233 1100548 2640.39 1772 1781 416.1
C 0 10 493298 1181.14 1772 1781 416.1
C 14 225 315491 753.86 1772 1781 416.1
D 8 195 2003459 4665.77 1804 1756 429.0
D 12 233 333920 774.24 1804 1756 429.0
D 13 249 102545 234.93 1804 1756 429.0

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