ASTROSAT CZTI

Data Quality Report

Orbit 33395

Creation date: 2024-06-27T20:48:21.003486
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/AS1A10_064T02_9000004788_33395cztM0_level2.evt modeM0/AS1A10_064T02_9000004788_33395cztM0_level2_quad_clean.evt
Size (bytes)567,023,04058,512,960
Size540.8 MB 55.8 MB
Events in quadrant A2,487,052438,618
Events in quadrant B6,196,805155,630
Events in quadrant C3,047,539425,917
Events in quadrant D5,091,310390,843

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103583
B0219812
C0120062
D0187942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A512450.097580%
B5124410580.113193%
C51241011.971116%
D51253356.536585%

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 7247 5125 0 0 0.00% 0.00%
B 7247 5124 1057 1057 14.59% 20.63%
C 7247 5125 98 98 1.35% 1.91%
D 7248 5126 315 315 4.35% 6.15%

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 13 6 7776 56.31 641 631 126.9
A 13 254 7693 55.65 641 631 126.9
A 3 137 5694 39.9 641 631 126.9
B 12 1 5282575 175159.47 152 149 30.2
B 12 2 175287 5807.38 152 149 30.2
B 0 219 52199 1725.92 152 149 30.2
C 0 10 389003 2757.43 612 619 140.8
C 15 214 219882 1556.71 612 619 140.8
C 10 49 16548 113.09 612 619 140.8
D 8 195 1366278 9160.47 605 589 149.1
D 2 250 315996 2115.62 605 589 149.1
D 13 249 278800 1866.12 605 589 149.1

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