ASTROSAT CZTI

Data Quality Report

Orbit 26711

Creation date: 2024-06-27T19:32:00.450398
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_145T01_9000003848_26711cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26711cztM0_level2_quad_clean.evt
Size (bytes)620,959,68086,492,160
Size592.2 MB 82.5 MB
Events in quadrant A4,202,218536,740
Events in quadrant B3,951,312541,657
Events in quadrant C4,580,456517,191
Events in quadrant D5,558,421496,321

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171480
B0163080
C0183260
D0214850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75802112.783641%
B75801622.137203%
C75803654.815303%
D75815537.294552%

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 8220 7582 42 42 0.51% 0.55%
B 8220 7582 5 5 0.06% 0.07%
C 8220 7582 28 28 0.34% 0.37%
D 8221 7583 326 326 3.97% 4.30%

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 400524 1997.33 976 954 200.1
A 6 16 19144 90.93 976 954 200.1
A 12 96 18839 89.4 976 954 200.1
B 0 189 57215 302.76 966 943 185.9
B 10 246 27280 141.7 966 943 185.9
B 0 219 23919 123.62 966 943 185.9
C 3 233 477003 2206.47 922 928 215.8
C 1 0 293645 1356.66 922 928 215.8
C 14 238 144709 666.38 922 928 215.8
D 1 52 1022031 4464.18 925 899 228.7
D 7 80 539691 2355.49 925 899 228.7
D 15 0 194558 846.64 925 899 228.7

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