ASTROSAT CZTI

Data Quality Report

Orbit 29631

Creation date: 2024-06-27T20:06:14.419454
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_286T01_9000004268_29631cztM0_level2.evt modeM0/AS1T03_286T01_9000004268_29631cztM0_level2_quad_clean.evt
Size (bytes)485,334,720102,556,800
Size462.9 MB 97.8 MB
Events in quadrant A3,001,317676,036
Events in quadrant B3,127,397709,799
Events in quadrant C3,215,557679,583
Events in quadrant D4,935,076609,429

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129142
B0131552
C0133442
D0187573

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6172250.405055%
B6172520.842515%
C6172811.312378%
D61715809.398801%

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 7492 6173 4 4 0.05% 0.06%
B 7492 6173 0 0 0.00% 0.00%
C 7492 6173 1 1 0.01% 0.02%
D 7491 6171 482 482 6.43% 7.81%

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 12 96 40823 264.06 767 752 151.8
A 13 254 10047 61.25 767 752 151.8
A 3 137 7175 42.33 767 752 151.8
B 0 189 40440 276.01 780 761 143.8
B 12 111 17306 115.09 780 761 143.8
B 11 111 15608 103.28 780 761 143.8
C 14 238 131571 747.27 756 761 175.1
C 3 233 55500 312.7 756 761 175.1
C 7 247 47394 266.4 756 761 175.1
D 7 238 1782131 10487.79 716 696 169.9
D 8 195 266717 1566.14 716 696 169.9
D 2 250 76987 449.15 716 696 169.9

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