ASTROSAT CZTI

Data Quality Report

Orbit 15700

Creation date: 2024-06-27T17:12:18.111713
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/AS1T02_088T01_9000002320_15700cztM0_level2.evt modeM0/AS1T02_088T01_9000002320_15700cztM0_level2_quad_clean.evt
Size (bytes)449,101,44087,848,640
Size428.3 MB 83.8 MB
Events in quadrant A3,034,180563,463
Events in quadrant B3,307,081571,907
Events in quadrant C3,098,897544,480
Events in quadrant D3,720,689528,610

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132573
B0139602
C0133212
D0154442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6484120.185071%
B6484330.508945%
C6484791.218384%
D6484380.586058%

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 8480 6487 0 0 0.00% 0.00%
B 8480 6487 5 5 0.06% 0.08%
C 8480 6487 0 0 0.00% 0.00%
D 8480 6487 19 19 0.22% 0.29%

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 9 143 11278 66.01 783 768 159.2
A 4 2 9819 56.84 783 768 159.2
A 0 226 6922 38.65 783 768 159.2
B 5 236 108351 719.28 788 771 149.6
B 4 216 36721 240.36 788 771 149.6
B 12 111 17177 109.69 788 771 149.6
C 14 238 128906 733.12 746 751 174.8
C 7 221 27474 152.87 746 751 174.8
C 3 233 10221 54.17 746 751 174.8
D 1 52 781709 4205.08 751 727 185.7
D 10 70 42896 227.05 751 727 185.7
D 12 221 30016 157.7 751 727 185.7

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