ASTROSAT CZTI

Data Quality Report

Orbit 36546

Creation date: 2024-06-27T21:28:14.275212
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_089T02_9000005216_36546cztM0_level2.evt modeM0/AS1A11_089T02_9000005216_36546cztM0_level2_quad_clean.evt
Size (bytes)2,017,759,680260,703,360
Size1.9 GB 248.6 MB
Events in quadrant A12,744,3911,605,692
Events in quadrant B14,321,2211,593,126
Events in quadrant C15,053,7911,540,644
Events in quadrant D17,333,9791,466,137

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0750
C0750
D0750

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0528446
B0584775
C0594975
D0684205

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05000
B05000
C05000
D05000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24563950.386761%
B245634751.933803%
C245637242.947523%
D2456310404.234011%

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 31998 24568 50 50 0.16% 0.20%
B 31998 24568 277 277 0.87% 1.13%
C 31998 24568 564 564 1.76% 2.30%
D 31998 24568 875 875 2.73% 3.56%

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 15 223 730048 1275.0 2861 2802 570.4
A 10 83 714324 1247.43 2861 2802 570.4
A 9 143 162369 279.75 2861 2802 570.4
B 5 255 1279768 2387.97 2820 2741 534.8
B 5 172 670451 1248.58 2820 2741 534.8
B 0 189 413289 767.7 2820 2741 534.8
C 0 10 1444160 2281.39 2725 2739 631.8
C 15 214 1028832 1624.04 2725 2739 631.8
C 14 254 925635 1460.7 2725 2739 631.8
D 12 235 2382319 3574.27 2728 2656 665.8
D 13 249 1168907 1751.72 2728 2656 665.8
D 2 250 767271 1148.46 2728 2656 665.8

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