ASTROSAT CZTI

Data Quality Report

Orbit 38697

Creation date: 2024-06-27T21:55:15.891763
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_054T01_9000005392_38697cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38697cztM0_level2_quad_clean.evt
Size (bytes)496,537,92085,262,400
Size473.5 MB 81.3 MB
Events in quadrant A2,866,595614,774
Events in quadrant B2,623,098631,323
Events in quadrant C2,646,981592,554
Events in quadrant D9,822,506363,727

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115823
B0113232
C0111202
D0328682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5415150.277008%
B5415200.369344%
C5415150.277008%
D5415238344.007387%

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 7088 5416 9 9 0.13% 0.17%
B 7088 5416 7 7 0.10% 0.13%
C 7088 5416 8 8 0.11% 0.15%
D 7088 5416 1962 1962 27.68% 36.23%

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 413144 3258.59 616 604 126.6
A 13 248 31163 241.38 616 604 126.6
A 13 6 14796 112.1 616 604 126.6
B 0 213 67262 559.7 610 593 119.1
B 4 171 61534 511.61 610 593 119.1
B 15 85 22845 186.81 610 593 119.1
C 15 214 221549 1563.26 599 602 141.3
C 15 208 44403 309.9 599 602 141.3
C 0 10 27596 190.99 599 602 141.3
D 2 16 6762482 52588.8 517 501 128.6
D 12 233 320214 2486.45 517 501 128.6
D 13 249 230843 1791.4 517 501 128.6

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