ASTROSAT CZTI

Data Quality Report

Orbit 39087

Creation date: 2024-06-27T22:00:15.961372
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/AS1T05_067T01_9000005432_39087cztM0_level2.fits modeM0/AS1T05_067T01_9000005432_39087cztM0_level2_quad_clean.evt
Size (bytes)391,429,44089,962,560
Size373.3 MB 85.8 MB
Events in quadrant A2,937,721627,711
Events in quadrant B2,544,087638,117
Events in quadrant C3,739,688586,486
Events in quadrant D4,854,060499,442

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120693
B0112092
C0144812
D0180132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5320150.281955%
B5320330.620301%
C53201412.650376%
D532067412.669173%

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 7323 5321 5 5 0.07% 0.09%
B 7323 5321 19 19 0.26% 0.36%
C 7323 5321 176 176 2.40% 3.31%
D 7323 5321 590 590 8.06% 11.09%

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 419866 3488.58 592 580 120.2
A 15 223 193365 1604.03 592 580 120.2
A 7 3 23843 193.55 592 580 120.2
B 5 184 144427 1263.65 589 574 113.8
B 5 172 35228 304.41 589 574 113.8
B 0 199 23500 201.39 589 574 113.8
C 15 208 1268405 9526.74 566 570 133.1
C 15 214 223797 1677.37 566 570 133.1
C 10 20 31779 234.51 566 570 133.1
D 6 239 772142 5760.59 545 530 133.9
D 2 249 658611 4913.01 545 530 133.9
D 12 235 574934 4288.31 545 530 133.9

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