ASTROSAT CZTI

Data Quality Report

Orbit 36102

Creation date: 2022-08-10T10:33:45.821253
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_069T01_9000005158_36102cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36102cztM0_level2_quad_clean.evt
Size (bytes)470,191,68046,978,560
Size448.4 MB 44.8 MB
Events in quadrant A2,759,999276,075
Events in quadrant B3,508,000275,995
Events in quadrant C3,787,538267,039
Events in quadrant D3,834,456241,324

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112353
B0136912
C0144192
D0147912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5155100.193986%
B51551883.646945%
C51551863.608147%
D51554388.496605%

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 7278 5156 3 3 0.04% 0.06%
B 7278 5156 134 134 1.84% 2.60%
C 7278 5156 160 160 2.20% 3.10%
D 7278 5156 384 384 5.28% 7.45%

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 169350 1330.17 630 618 126.9
A 15 223 143989 1130.24 630 618 126.9
A 13 6 10276 76.14 630 618 126.9
B 5 172 388548 3284.7 623 607 118.1
B 5 236 289838 2448.92 623 607 118.1
B 5 255 199507 1684.08 623 607 118.1
C 0 207 581798 4147.9 607 611 140.1
C 1 23 376428 2682.19 607 611 140.1
C 15 214 229851 1636.07 607 611 140.1
D 1 52 576897 4050.31 582 567 142.3
D 10 118 421344 2957.12 582 567 142.3
D 12 6 235670 1652.25 582 567 142.3

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