ASTROSAT CZTI

Data Quality Report

Orbit 37616

Creation date: 2024-06-27T21:42:14.473995
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/AS1A11_075T01_9000005342_37616cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37616cztM0_level2_quad_clean.evt
Size (bytes)1,130,803,200171,728,640
Size1.1 GB 163.8 MB
Events in quadrant A8,519,6141,039,396
Events in quadrant B8,144,6071,061,719
Events in quadrant C7,666,4251,053,332
Events in quadrant D8,880,854989,509

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343844
B0338793
C0317073
D0368233

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A153112231.456469%
B153111681.097250%
C15311370.241656%
D153113061.998563%

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 19579 15315 199 199 1.02% 1.30%
B 19579 15312 107 107 0.55% 0.70%
C 19579 15313 31 31 0.16% 0.20%
D 19579 15315 272 272 1.39% 1.78%

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 745672 2128.51 1741 1705 349.5
A 13 248 499258 1423.51 1741 1705 349.5
A 6 10 336918 959.05 1741 1705 349.5
B 5 172 379224 1125.85 1746 1699 335.3
B 5 200 268762 796.43 1746 1699 335.3
B 0 189 174673 515.84 1746 1699 335.3
C 15 214 701699 1763.79 1711 1723 396.9
C 0 10 118281 293.7 1711 1723 396.9
C 14 254 113315 281.19 1711 1723 396.9
D 2 250 655826 1592.64 1697 1649 410.8
D 2 249 443374 1075.41 1697 1649 410.8
D 13 249 372620 903.15 1697 1649 410.8

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