ASTROSAT CZTI

Data Quality Report

Orbit 01286

Creation date: 2024-06-27T14:10:24.861362
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/AS1G04_003T02_9000000228_01286cztM0_level2.evt modeM0/AS1G04_003T02_9000000228_01286cztM0_level2_quad_clean.evt
Size (bytes)1,221,272,64098,660,160
Size1.1 GB 94.1 MB
Events in quadrant A7,191,629656,964
Events in quadrant B8,197,830663,901
Events in quadrant C7,532,697654,881
Events in quadrant D13,648,395571,460

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258793
B0288092
C0268122
D0451192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A630920.031701%
B6309270.427960%
C6309150.237756%
D6309105116.658741%

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 7514 6310 112 112 1.49% 1.77%
B 7514 6310 365 365 4.86% 5.78%
C 7514 6309 190 190 2.53% 3.01%
D 7514 6309 3536 3536 47.06% 56.05%

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 12 243 8488 14.9 1870 1883 443.3
A 11 79 7565 12.82 1870 1883 443.3
A 3 111 6247 9.84 1870 1883 443.3
B 8 4 383584 825.19 1989 1994 462.4
B 12 52 143940 306.96 1989 1994 462.4
B 6 53 39527 81.17 1989 1994 462.4
C 15 241 311192 621.08 1810 1876 498.0
C 9 52 54730 106.13 1810 1876 498.0
C 8 208 43466 83.51 1810 1876 498.0
D 13 169 7011443 14074.31 1628 1685 498.1
D 12 22 224583 447.54 1628 1685 498.1
D 10 84 155338 308.51 1628 1685 498.1

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