ASTROSAT CZTI

Data Quality Report

Orbit 24497

Creation date: 2024-06-27T19:06:36.615284
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/AS1T03_183T01_9000003606_24497cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24497cztM0_level2_quad_clean.evt
Size (bytes)653,495,040131,880,960
Size623.2 MB 125.8 MB
Events in quadrant A4,490,951891,710
Events in quadrant B5,815,250873,104
Events in quadrant C3,820,350862,011
Events in quadrant D5,129,013817,497

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186062
B0224822
C0165122
D0206802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79043113.934717%
B790594711.979760%
C79053133.959519%
D79056618.361796%

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 8389 7907 23 23 0.27% 0.29%
B 8390 7907 400 400 4.77% 5.06%
C 8390 7907 1 1 0.01% 0.01%
D 8390 7908 364 364 4.34% 4.60%

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 14 111 702972 3669.43 946 924 191.3
A 4 2 139413 723.85 946 924 191.3
A 13 254 11901 57.37 946 924 191.3
B 3 64 2137638 12113.4 918 891 176.4
B 6 36 64392 359.99 918 891 176.4
B 12 111 22052 119.96 918 891 176.4
C 14 238 145652 675.22 921 925 214.3
C 2 16 75366 347.3 921 925 214.3
C 13 61 6498 26.0 921 925 214.3
D 12 218 1254193 5756.23 905 878 217.7
D 9 1 156102 712.91 905 878 217.7
D 1 52 131934 601.91 905 878 217.7

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