ASTROSAT CZTI

Data Quality Report

Orbit 24025

Creation date: 2024-06-27T19:01:16.067333
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_165T01_9000003558_24025cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24025cztM0_level2_quad_clean.evt
Size (bytes)464,008,320136,105,920
Size442.5 MB 129.8 MB
Events in quadrant A3,214,806927,969
Events in quadrant B3,360,403947,927
Events in quadrant C3,323,346908,854
Events in quadrant D3,712,997885,137

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136322
B0140322
C0140462
D0152522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6491290.446772%
B6492430.662354%
C6492861.324707%
D6492570.878004%

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 7596 6492 2 2 0.03% 0.03%
B 7597 6493 1 1 0.01% 0.02%
C 7597 6493 2 2 0.03% 0.03%
D 7597 6493 14 14 0.18% 0.22%

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 6 16 32140 190.4 826 810 164.5
A 13 254 9585 53.33 826 810 164.5
A 0 226 7205 38.86 826 810 164.5
B 0 189 107728 693.12 824 804 154.3
B 12 111 17614 108.97 824 804 154.3
B 4 216 16315 100.55 824 804 154.3
C 14 238 129322 693.86 804 809 185.2
C 0 239 51093 271.49 804 809 185.2
C 13 61 5489 25.27 804 809 185.2
D 8 195 465286 2373.29 814 791 195.7
D 1 52 76444 386.54 814 791 195.7
D 2 234 29898 148.72 814 791 195.7

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