ASTROSAT CZTI

Data Quality Report

Orbit 34279

Creation date: 2022-01-30T06:54:42.659095
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/AS1T04_086T01_9000004890_34279cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34279cztM0_level2_quad_clean.evt
Size (bytes)466,902,72049,982,400
Size445.3 MB 47.7 MB
Events in quadrant A2,462,986287,499
Events in quadrant B3,612,815284,558
Events in quadrant C2,834,961300,210
Events in quadrant D4,877,483277,061

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105893
B0139762
C0112072
D0181212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518990.173444%
B51893526.783581%
C5189250.481788%
D51893536.802852%

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 7284 5190 1 1 0.01% 0.02%
B 7284 5190 242 242 3.32% 4.66%
C 7284 5190 14 14 0.19% 0.27%
D 7284 5190 312 312 4.28% 6.01%

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 9 143 28382 224.16 618 606 123.9
A 10 83 25001 196.88 618 606 123.9
A 13 6 12979 99.85 618 606 123.9
B 5 172 910371 7897.21 605 589 115.2
B 0 229 220340 1907.51 605 589 115.2
B 15 222 15618 130.46 605 589 115.2
C 15 214 225483 1583.49 617 624 142.0
C 0 10 102880 720.1 617 624 142.0
C 14 254 48104 334.36 617 624 142.0
D 8 195 877317 5837.41 592 577 150.2
D 12 235 437149 2906.73 592 577 150.2
D 7 80 350044 2326.78 592 577 150.2

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