ASTROSAT CZTI

Data Quality Report

Orbit 45434

Creation date: 2024-06-27T23:11:38.047024
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/AS1A13_023T05_9000006062_45434cztM0_level2.fits modeM0/AS1A13_023T05_9000006062_45434cztM0_level2_quad_clean.evt
Size (bytes)500,950,080116,346,240
Size477.7 MB 111.0 MB
Events in quadrant A6,199,921759,365
Events in quadrant B3,696,284787,552
Events in quadrant C3,494,302772,938
Events in quadrant D4,588,740695,962

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234793
B0160222
C0156722
D0185542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72712403.300784%
B72721872.571507%
C72721031.416392%
D72721882.585259%

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 7701 7271 11 11 0.14% 0.15%
B 7702 7273 42 42 0.55% 0.58%
C 7702 7273 31 31 0.40% 0.43%
D 7702 7273 99 99 1.29% 1.36%

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 2878458 16576.22 829 810 173.6
A 9 191 45198 255.69 829 810 173.6
A 10 248 30436 170.66 829 810 173.6
B 5 255 97660 575.97 838 814 168.1
B 15 35 91278 538.02 838 814 168.1
B 5 32 39442 229.73 838 814 168.1
C 14 254 184914 933.59 827 834 197.2
C 0 239 21987 107.28 827 834 197.2
C 12 250 18658 90.4 827 834 197.2
D 1 52 929555 4440.09 819 795 209.2
D 11 241 128140 608.79 819 795 209.2
D 5 222 109039 517.48 819 795 209.2

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