ASTROSAT CZTI

Data Quality Report

Orbit 25039

Creation date: 2024-06-27T19:13:05.403356
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/AS1T03_206T01_9000003672_25039cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25039cztM0_level2_quad_clean.evt
Size (bytes)467,182,08088,721,280
Size445.5 MB 84.6 MB
Events in quadrant A3,031,884582,001
Events in quadrant B3,182,678597,172
Events in quadrant C3,189,703559,708
Events in quadrant D4,328,606520,386

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128381
B0133121
C0131841
D0168931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6124280.457218%
B6125370.604082%
C6125671.093878%
D61253315.404082%

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 7359 6125 0 0 0.00% 0.00%
B 7360 6126 3 3 0.04% 0.05%
C 7360 6126 8 8 0.11% 0.13%
D 7360 6126 250 250 3.40% 4.08%

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 15 174 24036 149.3 774 760 155.9
A 11 208 23415 145.32 774 760 155.9
A 13 254 10296 61.17 774 760 155.9
B 0 190 64839 436.93 778 759 146.7
B 5 172 33147 220.84 778 759 146.7
B 0 169 20516 134.71 778 759 146.7
C 14 238 119328 677.85 744 751 174.9
C 7 247 108116 613.75 744 751 174.9
C 0 239 36169 202.47 744 751 174.9
D 1 52 933580 5263.85 730 710 177.2
D 7 38 118215 663.04 730 710 177.2
D 12 233 113259 635.07 730 710 177.2

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