ASTROSAT CZTI

Data Quality Report

Orbit 00928

Creation date: 2024-06-27T14:04:53.467707
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/AS1P01_163T03_9000000186_00928cztM0_level2.evt modeM0/AS1P01_163T03_9000000186_00928cztM0_level2_quad_clean.evt
Size (bytes)1,003,340,16094,590,720
Size956.9 MB 90.2 MB
Events in quadrant A7,690,118612,405
Events in quadrant B7,931,845617,068
Events in quadrant C7,556,618598,181
Events in quadrant D6,779,835587,412

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274690
B0281190
C0270250
D0247640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6448130.201613%
B644790.139600%
C644790.139600%
D644720.031022%

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 7523 6449 261 261 3.47% 4.05%
B 7522 6448 249 249 3.31% 3.86%
C 7522 6448 169 169 2.25% 2.62%
D 7522 6448 102 102 1.36% 1.58%

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 15 233 172100 362.25 1953 1972 469.6
A 14 170 18516 35.23 1953 1972 469.6
A 12 189 12439 22.29 1953 1972 469.6
B 5 191 47398 93.85 2054 2060 483.1
B 15 22 32864 63.77 2054 2060 483.1
B 7 221 9472 15.34 2054 2060 483.1
C 15 241 248562 483.51 1839 1899 510.2
C 9 144 85981 164.82 1839 1899 510.2
C 3 111 23430 42.2 1839 1899 510.2
D 1 4 97391 175.7 1759 1818 543.9
D 10 125 39412 69.11 1759 1818 543.9
D 12 188 17344 28.54 1759 1818 543.9

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