ASTROSAT CZTI

Data Quality Report

Orbit 49829

Creation date: 2024-12-16T14:41:57.741969
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/AS1A13_037T01_9000006440_49829cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49829cztM0_level2_quad_clean.evt
Size (bytes)1,403,199,36044,835,840
Size1.3 GB 42.8 MB
Events in quadrant A16,970,95385,640
Events in quadrant B4,442,564711,570
Events in quadrant C14,097,9418,609
Events in quadrant D15,891,31064,390

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0551970
B0180400
C0466595
D0519530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6992624589.316362%
B69922623.747140%
C6991691598.912888%
D6991632390.444858%

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 6992 6992 5404 5404 77.29% 77.29%
B 6992 6992 113 113 1.62% 1.62%
C 6990 6989 3616 3616 51.73% 51.74%
D 6991 6990 5027 5027 71.91% 71.92%

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 3 84 6062281 71642.23 321 311 84.6
A 4 4 4252475 50253.38 321 311 84.6
A 0 98 1832507 21653.46 321 311 84.6
B 5 49 248406 1511.95 765 740 163.8
B 4 206 237034 1442.53 765 740 163.8
B 0 229 205706 1251.28 765 740 163.8
C 15 197 5762851 89896.55 201 198 64.1
C 1 44 2857679 44576.29 201 198 64.1
C 15 174 844197 13166.26 201 198 64.1
D 7 61 4595858 43945.29 287 272 104.6
D 7 126 1623170 15518.96 287 272 104.6
D 15 184 1359302 12995.72 287 272 104.6

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