ASTROSAT CZTI

Data Quality Report

Orbit 41629

Creation date: 2024-06-27T22:30:53.883210
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_9000005680_41629cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41629cztM0_level2_quad_clean.evt
Size (bytes)671,132,160160,064,640
Size640.0 MB 152.6 MB
Events in quadrant A5,185,8391,084,961
Events in quadrant B4,922,5661,104,906
Events in quadrant C5,354,4211,056,122
Events in quadrant D8,604,652907,853

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210792
B0215352
C0221192
D0324272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10000160.160000%
B10001730.729927%
C100011371.369863%
D100009839.830000%

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 13167 10002 3 3 0.02% 0.03%
B 13168 10003 47 47 0.36% 0.47%
C 13168 10003 115 115 0.87% 1.15%
D 13167 10002 829 829 6.30% 8.29%

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 835866 3645.19 1114 1091 229.0
A 13 254 17732 72.67 1114 1091 229.0
A 2 79 17526 71.77 1114 1091 229.0
B 5 255 307824 1453.25 1094 1063 211.1
B 0 186 261478 1233.69 1094 1063 211.1
B 12 111 27425 124.89 1094 1063 211.1
C 15 214 433596 1735.7 1072 1076 249.2
C 0 10 367909 1472.1 1072 1076 249.2
C 0 15 365144 1461.0 1072 1076 249.2
D 12 79 2150322 8447.23 1042 1013 254.4
D 13 249 1496146 5876.18 1042 1013 254.4
D 1 47 464649 1822.19 1042 1013 254.4

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