ASTROSAT CZTI

Data Quality Report

Orbit 34247

Creation date: 2022-07-18T14:22:02.194697
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/AS1A11_059T09_9000004888_34247cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34247cztM0_level2_quad_clean.evt
Size (bytes)472,864,32068,094,720
Size451.0 MB 64.9 MB
Events in quadrant A2,567,924435,720
Events in quadrant B3,255,292441,418
Events in quadrant C4,348,326423,421
Events in quadrant D3,806,997407,520

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108330
B0129560
C0162740
D0147270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5049100.198059%
B50491382.733214%
C50493997.902555%
D50492244.436522%

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 7021 5050 3 3 0.04% 0.06%
B 7021 5050 75 75 1.07% 1.49%
C 7021 5050 378 378 5.38% 7.49%
D 7021 5050 182 182 2.59% 3.60%

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 24832 188.97 642 632 128.1
A 9 143 23505 178.61 642 632 128.1
A 15 47 16505 123.95 642 632 128.1
B 5 172 470899 3915.76 641 627 120.1
B 0 189 90148 745.4 641 627 120.1
B 4 171 73656 608.08 641 627 120.1
C 14 254 1306037 9174.33 621 626 142.3
C 0 10 261648 1834.44 621 626 142.3
C 15 214 215973 1513.44 621 626 142.3
D 8 195 576772 3884.25 618 604 148.3
D 7 80 290052 1951.32 618 604 148.3
D 13 249 278703 1874.81 618 604 148.3

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