ASTROSAT CZTI

Data Quality Report

Orbit 39811

Creation date: 2024-06-27T22:09:13.597448
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/AS1A12_022T01_9000005498_39811cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39811cztM0_level2_quad_clean.evt
Size (bytes)507,193,92079,525,440
Size483.7 MB 75.8 MB
Events in quadrant A3,372,485604,110
Events in quadrant B2,758,517607,574
Events in quadrant C9,772,544300,231
Events in quadrant D2,470,735535,088

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135263
B0116252
C0325992
D0109592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5146621.204819%
B5146981.904392%
C5146278254.061407%
D5146200.388651%

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 7179 5147 48 48 0.67% 0.93%
B 7179 5147 53 53 0.74% 1.03%
C 7179 5147 2575 2575 35.87% 50.03%
D 7179 5147 15 15 0.21% 0.29%

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 10 83 467859 4012.75 572 561 116.5
A 2 79 322228 2762.2 572 561 116.5
A 9 143 282933 2424.77 572 561 116.5
B 5 172 198237 1816.96 567 552 108.8
B 4 171 194296 1780.74 567 552 108.8
B 5 255 97532 891.36 567 552 108.8
C 9 187 5214732 49901.22 447 450 104.5
C 15 208 2604512 24921.14 447 450 104.5
C 15 214 177299 1692.46 447 450 104.5
D 2 249 85783 623.46 561 545 136.7
D 12 227 61399 445.1 561 545 136.7
D 13 249 61312 444.47 561 545 136.7

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