ASTROSAT CZTI

Data Quality Report

Orbit 04401

Creation date: 2024-06-27T14:41:28.150132
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/AS1G05_230T02_9000000548_04401cztM0_level2.evt modeM0/AS1G05_230T02_9000000548_04401cztM0_level2_quad_clean.evt
Size (bytes)414,216,00076,354,560
Size395.0 MB 72.8 MB
Events in quadrant A2,857,490473,278
Events in quadrant B2,905,870473,949
Events in quadrant C3,404,737470,798
Events in quadrant D2,950,970457,639

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128183
B0128562
C0144152
D0133422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6249991.584253%
B6249901.440230%
C6249981.568251%
D62491151.840294%

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 7419 6251 2 2 0.03% 0.03%
B 7419 6251 0 0 0.00% 0.00%
C 7419 6251 19 19 0.26% 0.30%
D 7419 6251 36 36 0.49% 0.58%

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 50 37597 250.98 726 708 147.0
A 13 14 10495 66.59 726 708 147.0
A 12 194 7687 47.48 726 708 147.0
B 14 167 45736 326.8 728 710 137.8
B 15 54 20919 146.68 728 710 137.8
B 7 252 18890 131.95 728 710 137.8
C 9 16 317880 1959.65 706 708 161.9
C 9 247 280849 1730.85 706 708 161.9
C 12 4 47784 290.86 706 708 161.9
D 13 53 138151 819.61 709 689 167.7
D 13 239 25731 149.31 709 689 167.7
D 2 14 23177 134.08 709 689 167.7

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