ASTROSAT CZTI

Data Quality Report

Orbit 24236

Creation date: 2024-06-27T19:03:50.275487
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/AS1A07_118T01_9000003586_24236cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24236cztM0_level2_quad_clean.evt
Size (bytes)666,587,52088,937,280
Size635.7 MB 84.8 MB
Events in quadrant A3,651,546556,098
Events in quadrant B4,074,788567,408
Events in quadrant C4,722,755535,568
Events in quadrant D7,222,404503,745

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156991
B0168311
C0190461
D0264991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76171622.126822%
B76182593.399842%
C76182693.531111%
D7618166921.908637%

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 7797 7617 0 0 0.00% 0.00%
B 7798 7618 63 63 0.81% 0.83%
C 7798 7618 19 19 0.24% 0.25%
D 7798 7618 1411 1411 18.09% 18.52%

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 3 1 13335 65.13 941 918 190.7
A 13 254 13080 63.79 941 918 190.7
A 3 137 8402 39.25 941 918 190.7
B 0 245 205686 1139.56 931 906 179.7
B 12 17 163420 904.36 931 906 179.7
B 0 190 23063 123.3 931 906 179.7
C 7 247 867119 4081.13 898 903 212.2
C 2 16 186091 872.5 898 903 212.2
C 14 238 140169 656.14 898 903 212.2
D 7 238 3420468 16532.51 844 817 206.8
D 12 233 465812 2248.05 844 817 206.8
D 1 52 53600 255.18 844 817 206.8

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