ASTROSAT CZTI

Data Quality Report

Orbit 18405

Creation date: 2024-06-27T17:49:23.895030
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/AS1A05_094T01_9000002726_18405cztM0_level2.evt modeM0/AS1A05_094T01_9000002726_18405cztM0_level2_quad_clean.evt
Size (bytes)296,683,20066,147,840
Size282.9 MB 63.1 MB
Events in quadrant A2,102,953430,895
Events in quadrant B2,152,020434,839
Events in quadrant C2,138,829410,999
Events in quadrant D2,272,414398,165

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094320
B095200
C094000
D098450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A466540.085745%
B4666160.342906%
C4666140.300043%
D4666100.214316%

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 4665 4665 1 1 0.02% 0.02%
B 4666 4666 9 9 0.19% 0.19%
C 4666 4666 0 0 0.00% 0.00%
D 4666 4666 4 4 0.09% 0.09%

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 4 2 20910 185.6 537 526 109.8
A 15 174 12584 109.79 537 526 109.8
A 0 254 5264 43.14 537 526 109.8
B 7 220 33037 315.34 533 518 103.1
B 0 189 15057 140.99 533 518 103.1
B 12 111 12044 111.77 533 518 103.1
C 14 238 79552 651.02 513 516 121.4
C 3 233 30585 247.68 513 516 121.4
C 0 207 10452 81.84 513 516 121.4
D 1 52 199074 1560.8 519 503 127.2
D 12 110 27487 212.1 519 503 127.2
D 13 104 25694 198.01 519 503 127.2

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