ASTROSAT CZTI

Data Quality Report

Orbit 42921

Creation date: 2024-06-27T22:45:48.904936
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/AS1T05_143T01_9000005830_42921cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42921cztM0_level2_quad_clean.evt
Size (bytes)382,700,16085,449,600
Size365.0 MB 81.5 MB
Events in quadrant A3,269,992602,481
Events in quadrant B3,264,121568,556
Events in quadrant C2,546,204573,157
Events in quadrant D4,686,337483,242

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128671
B0132471
C0107851
D0174121

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51311192.319236%
B51324087.950117%
C5132180.350740%
D513261612.003118%

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 6984 5132 88 88 1.26% 1.71%
B 6985 5133 323 323 4.62% 6.29%
C 6985 5133 17 17 0.24% 0.33%
D 6985 5133 605 605 8.66% 11.79%

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 10 83 510348 4338.57 570 558 117.5
A 15 237 415358 3530.16 570 558 117.5
A 15 222 68496 578.19 570 558 117.5
B 4 81 1073020 10314.66 543 530 104.0
B 4 36 26000 244.96 543 530 104.0
B 12 111 12665 116.71 543 530 104.0
C 15 214 205225 1598.63 555 559 128.0
C 14 254 149733 1165.19 555 559 128.0
C 3 233 12700 94.83 555 559 128.0
D 1 47 669792 5157.84 534 519 129.8
D 1 52 375121 2886.92 534 519 129.8
D 12 233 361881 2784.88 534 519 129.8

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