ASTROSAT CZTI

Data Quality Report

Orbit 40440

Creation date: 2024-06-27T22:16:07.680865
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/AS1A12_022T01_9000005540_40440cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40440cztM0_level2_quad_clean.evt
Size (bytes)917,075,520244,422,720
Size874.6 MB 233.1 MB
Events in quadrant A7,862,0421,664,199
Events in quadrant B7,370,9451,702,268
Events in quadrant C7,561,1451,641,842
Events in quadrant D9,938,7351,313,083

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0333645
B0331304
C0329754
D0408744

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15644260.166198%
B15644830.530555%
C15644980.626438%
D15644221214.139606%

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 19853 15647 13 13 0.07% 0.08%
B 19853 15647 44 44 0.22% 0.28%
C 19853 15647 75 75 0.38% 0.48%
D 19853 15647 732 732 3.69% 4.68%

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 1243494 3665.12 1671 1636 338.8
A 7 3 43856 124.6 1671 1636 338.8
A 13 248 30253 84.46 1671 1636 338.8
B 5 255 378961 1196.47 1657 1612 315.4
B 3 112 175670 551.89 1657 1612 315.4
B 4 170 161853 508.08 1657 1612 315.4
C 15 214 668899 1783.37 1623 1632 374.2
C 14 254 524767 1398.15 1623 1632 374.2
C 0 10 19613 48.06 1623 1632 374.2
D 12 227 1736751 4733.76 1500 1460 366.6
D 2 250 1390929 3790.38 1500 1460 366.6
D 12 191 432750 1176.53 1500 1460 366.6

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