ASTROSAT CZTI

Data Quality Report

Orbit 50212

Creation date: 2025-01-09T13:17:23.245684
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/AS1C09_003T01_9000006442_50212cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50212cztM0_level2_quad_clean.evt
Size (bytes)1,015,194,24070,473,600
Size968.2 MB 67.2 MB
Events in quadrant A6,623,192533,881
Events in quadrant B5,407,780586,633
Events in quadrant C11,351,502325,050
Events in quadrant D13,697,532235,963

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241171
B0206011
C0382451
D0451401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A648183812.930103%
B648267910.475162%
C6482303946.883678%
D6482389960.151188%

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 7221 6481 783 783 10.84% 12.08%
B 7222 6482 447 447 6.19% 6.90%
C 7221 6481 2683 2683 37.16% 41.40%
D 7222 6482 3950 3950 54.69% 60.94%

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 0 98 2158642 13323.36 651 634 162.0
A 10 253 326957 2014.69 651 634 162.0
A 12 250 298588 1839.54 651 634 162.0
B 4 206 1864524 13467.42 648 627 138.4
B 6 203 208464 1501.71 648 627 138.4
B 3 249 135008 970.96 648 627 138.4
C 4 111 3420509 22682.95 505 499 150.8
C 15 197 2578945 17101.34 505 499 150.8
C 15 213 797251 5284.39 505 499 150.8
D 15 108 3311727 23254.84 489 474 142.4
D 7 61 3035498 21314.89 489 474 142.4
D 11 245 2030537 14257.08 489 474 142.4

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