ASTROSAT CZTI

Data Quality Report

Orbit 11227

Creation date: 2024-06-27T16:10:02.076596
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/AS1T01_200T01_9000001638_11227cztM0_level2.evt modeM0/AS1T01_200T01_9000001638_11227cztM0_level2_quad_clean.evt
Size (bytes)632,358,720115,496,640
Size603.1 MB 110.1 MB
Events in quadrant A7,049,410715,218
Events in quadrant B3,761,404783,579
Events in quadrant C3,096,889796,008
Events in quadrant D4,808,827754,586

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253432
B0155081
C0138351
D0187911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6423117318.262494%
B64232003.113810%
C6423991.541336%
D64231582.459910%

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 7428 6424 822 822 11.07% 12.80%
B 7428 6424 122 122 1.64% 1.90%
C 7428 6424 56 56 0.75% 0.87%
D 7428 6424 120 120 1.62% 1.87%

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 8 5 3042129 21728.8 683 667 140.0
A 14 238 855436 6106.64 683 667 140.0
A 15 174 341574 2435.51 683 667 140.0
B 4 239 700476 5067.28 732 715 138.1
B 15 204 97016 697.36 732 715 138.1
B 4 80 37292 264.87 732 715 138.1
C 4 254 258296 1526.61 724 726 168.7
C 14 234 15182 85.68 724 726 168.7
C 13 61 5511 28.36 724 726 168.7
D 12 157 887468 5128.88 717 697 172.9
D 8 195 400959 2315.02 717 697 172.9
D 1 52 297702 1717.81 717 697 172.9

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