ASTROSAT CZTI

Data Quality Report

Orbit 20824

Creation date: 2024-06-27T18:19:59.463084
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/AS1A05_013T01_9000003070_20824cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20824cztM0_level2_quad_clean.evt
Size (bytes)788,443,20057,876,480
Size751.9 MB 55.2 MB
Events in quadrant A2,946,046392,788
Events in quadrant B3,182,087391,449
Events in quadrant C3,030,674379,792
Events in quadrant D14,299,209153,612

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127001
B0133041
C0128491
D0467811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6212200.321958%
B6213410.659907%
C6213651.046193%
D6212486078.235673%

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 7277 6212 0 0 0.00% 0.00%
B 7278 6213 6 6 0.08% 0.10%
C 7278 6213 5 5 0.07% 0.08%
D 7276 6211 4863 4863 66.84% 78.30%

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 5 16 9238 55.35 763 748 153.4
A 0 226 6377 36.7 763 748 153.4
A 3 137 6150 35.22 763 748 153.4
B 7 220 87307 601.81 760 739 143.8
B 0 189 25308 170.8 760 739 143.8
B 0 230 23252 156.51 760 739 143.8
C 14 238 117067 681.76 734 739 170.6
C 9 54 49630 286.54 734 739 170.6
C 13 61 5098 25.55 734 739 170.6
D 1 52 12216388 117526.78 439 427 103.9
D 1 20 303617 2916.92 439 427 103.9
D 9 1 85221 815.78 439 427 103.9

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