ASTROSAT CZTI

Data Quality Report

Orbit 41483

Creation date: 2024-06-27T22:29:38.850882
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_035T02_9000005676_41483cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41483cztM0_level2_quad_clean.evt
Size (bytes)1,786,717,440403,220,160
Size1.7 GB 384.5 MB
Events in quadrant A14,164,8452,732,238
Events in quadrant B14,081,5462,731,334
Events in quadrant C18,513,6642,527,890
Events in quadrant D17,407,2072,462,004

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05220
B05220
C05220
D05220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0568287
B0594836
C0709286
D0693866

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A255062370.929193%
B255068043.152199%
C2550618957.429624%
D255067402.901278%

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 34103 25512 163 163 0.48% 0.64%
B 34103 25512 632 632 1.85% 2.48%
C 34103 25512 1770 1770 5.19% 6.94%
D 34103 25512 633 633 1.86% 2.48%

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 2261836 3963.57 2795 2738 570.0
A 14 235 420262 732.54 2795 2738 570.0
A 2 79 319807 556.29 2795 2738 570.0
B 0 186 2364206 4524.43 2748 2671 522.0
B 5 255 435044 828.38 2748 2671 522.0
B 0 245 201109 380.18 2748 2671 522.0
C 4 254 4832785 7975.99 2619 2634 605.6
C 0 10 1863227 3072.38 2619 2634 605.6
C 15 214 1024203 1686.91 2619 2634 605.6
D 12 16 2167269 3301.13 2705 2629 655.7
D 1 52 1168578 1778.1 2705 2629 655.7
D 1 47 904821 1375.86 2705 2629 655.7

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