ASTROSAT CZTI

Data Quality Report

Orbit 26552

Creation date: 2024-06-27T19:30:21.590669
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/AS1A09_095T02_9000003840_26552cztM0_level2.evt modeM0/AS1A09_095T02_9000003840_26552cztM0_level2_quad_clean.evt
Size (bytes)862,822,080118,200,960
Size822.9 MB 112.7 MB
Events in quadrant A4,008,944837,465
Events in quadrant B4,263,011852,026
Events in quadrant C3,981,221817,029
Events in quadrant D13,343,419522,782

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170890
B0179210
C0168240
D0450580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79011291.632705%
B79022753.480132%
C79022082.632245%
D7901388149.120365%

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 8446 7903 20 20 0.24% 0.25%
B 8447 7903 75 75 0.89% 0.95%
C 8447 7904 4 4 0.05% 0.05%
D 8446 7901 3544 3544 41.96% 44.86%

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 0 13 306331 1614.06 947 924 189.2
A 5 168 45656 236.41 947 924 189.2
A 13 254 12251 59.86 947 924 189.2
B 5 172 269707 1497.92 941 916 179.4
B 3 64 234259 1300.37 941 916 179.4
B 3 112 42178 229.94 941 916 179.4
C 3 233 253785 1196.53 911 914 211.3
C 14 238 146544 689.09 911 914 211.3
C 4 254 26097 119.16 911 914 211.3
D 7 80 9148653 55242.99 690 670 165.6
D 1 52 1263666 7627.0 690 670 165.6
D 2 250 218037 1312.64 690 670 165.6

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