ASTROSAT CZTI

Data Quality Report

Orbit 01239

Creation date: 2024-06-27T14:09:39.294873
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/AS1G04_011T02_9000000226_01239cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01239cztM0_level2_quad_clean.evt
Size (bytes)1,452,450,24095,492,160
Size1.4 GB 91.1 MB
Events in quadrant A9,318,650692,074
Events in quadrant B17,163,001427,545
Events in quadrant C8,071,079688,388
Events in quadrant D9,015,026636,670

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0321812
B0561811
C0285251
D0314401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6375661.035294%
B6375421366.086275%
C6375180.282353%
D637573111.466667%

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 7245 6375 809 809 11.17% 12.69%
B 7245 6375 5156 5156 71.17% 80.88%
C 7245 6376 383 383 5.29% 6.01%
D 7245 6376 1174 1174 16.20% 18.41%

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 3 80 1529777 3269.37 1986 2005 467.3
A 15 127 134530 283.6 1986 2005 467.3
A 12 243 27718 55.02 1986 2005 467.3
B 2 32 11328966 35182.7 1379 1386 322.0
B 8 4 460682 1426.54 1379 1386 322.0
B 15 22 40381 121.12 1379 1386 322.0
C 9 52 418702 812.01 1861 1932 513.3
C 15 241 333456 645.92 1861 1932 513.3
C 3 111 22838 40.73 1861 1932 513.3
D 10 84 2429424 4628.12 1729 1795 524.5
D 2 88 44222 80.88 1729 1795 524.5
D 10 85 43708 79.9 1729 1795 524.5

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