ASTROSAT CZTI

Data Quality Report

Orbit 38436

Creation date: 2024-06-27T21:52:43.565337
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_018T01_9000005386_38436cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38436cztM0_level2_quad_clean.evt
Size (bytes)332,161,92089,277,120
Size316.8 MB 85.1 MB
Events in quadrant A2,841,828601,562
Events in quadrant B2,952,394608,846
Events in quadrant C2,576,884586,576
Events in quadrant D3,514,519537,623

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117193
B0121942
C0109172
D0140332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5263270.513015%
B5263490.931028%
C5263210.399012%
D52631432.717082%

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 7055 5264 16 16 0.23% 0.30%
B 7055 5264 33 33 0.47% 0.63%
C 7055 5264 17 17 0.24% 0.32%
D 7055 5264 123 123 1.74% 2.34%

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 408382 3449.09 580 568 118.2
A 9 143 107702 906.09 580 568 118.2
A 13 248 20983 172.66 580 568 118.2
B 5 184 259617 2340.56 578 562 110.7
B 0 183 164033 1476.96 578 562 110.7
B 4 232 99844 897.01 578 562 110.7
C 15 214 222504 1663.16 571 575 133.4
C 0 10 70576 524.59 571 575 133.4
C 3 233 18479 134.17 571 575 133.4
D 13 249 309551 2263.49 565 548 136.5
D 2 153 210453 1537.58 565 548 136.5
D 2 16 178365 1302.53 565 548 136.5

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