ASTROSAT CZTI

Data Quality Report

Orbit 27651

Creation date: 2024-06-27T19:42:36.524309
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_257T01_9000003976_27651cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27651cztM0_level2_quad_clean.evt
Size (bytes)711,843,84079,220,160
Size678.9 MB 75.6 MB
Events in quadrant A3,685,345484,651
Events in quadrant B4,662,048493,093
Events in quadrant C3,687,337471,849
Events in quadrant D9,010,276421,394

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157810
B0186520
C0157330
D0319920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75731772.337251%
B75743975.241616%
C75742022.667019%
D7573182324.072362%

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 8513 7574 0 0 0.00% 0.00%
B 8514 7574 109 109 1.28% 1.44%
C 8514 7574 0 0 0.00% 0.00%
D 8512 7573 1380 1380 16.21% 18.22%

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 6 16 51211 263.22 939 917 191.1
A 13 254 13113 63.83 939 917 191.1
A 3 137 9220 43.45 939 917 191.1
B 10 245 564589 3124.93 932 906 180.4
B 5 255 296255 1637.35 932 906 180.4
B 15 32 44272 240.41 932 906 180.4
C 14 238 142920 656.68 908 913 216.3
C 13 61 6352 25.15 908 913 216.3
C 2 16 5198 19.81 908 913 216.3
D 1 52 5734270 29976.52 791 767 191.3
D 11 176 110952 576.08 791 767 191.3
D 7 80 70907 366.71 791 767 191.3

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