ASTROSAT CZTI

Data Quality Report

Orbit 50227

Creation date: 2025-01-10T13:10:01.304364
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_50227cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50227cztM0_level2_quad_clean.evt
Size (bytes)892,572,48065,759,040
Size851.2 MB 62.7 MB
Events in quadrant A5,003,359520,482
Events in quadrant B3,418,926600,508
Events in quadrant C13,395,168174,226
Events in quadrant D10,755,017272,656

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189461
B0144231
C0439311
D0360911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60525248.658295%
B60521121.850628%
C6053431771.320007%
D6053285847.216256%

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 6891 6051 454 454 6.59% 7.50%
B 6891 6051 50 50 0.73% 0.83%
C 6892 6052 4471 4471 64.87% 73.88%
D 6892 6052 2881 2881 41.80% 47.60%

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 797596 5249.93 615 600 151.8
A 3 114 371070 2440.34 615 600 151.8
A 11 7 315653 2075.3 615 600 151.8
B 6 36 246431 1830.28 628 606 134.3
B 5 32 206972 1536.49 628 606 134.3
B 4 216 93733 693.37 628 606 134.3
C 15 197 4190869 37743.86 394 392 111.0
C 4 111 3339125 30072.16 394 392 111.0
C 15 127 2040696 18377.13 394 392 111.0
D 7 61 5891394 49141.74 416 401 119.9
D 15 108 941732 7852.44 416 401 119.9
D 2 37 337325 2810.57 416 401 119.9

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