ASTROSAT CZTI

Data Quality Report

Orbit 48571

Creation date: 2024-09-20T23:47:49.895405
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_037T01_9000006436_48571cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48571cztM0_level2_quad_clean.evt
Size (bytes)1,321,701,120306,593,280
Size1.2 GB 292.4 MB
Events in quadrant A19,996,1271,957,876
Events in quadrant B9,234,5542,100,174
Events in quadrant C8,477,2802,026,924
Events in quadrant D9,670,2611,819,332

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0742264
B0423852
C0411112
D0443562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04060
B04060
C04060
D04060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A200027903.949605%
B200023761.879812%
C200031650.824876%
D200033991.994701%

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 20942 20004 26 26 0.12% 0.13%
B 20942 20004 39 39 0.19% 0.19%
C 20943 20005 5 5 0.02% 0.02%
D 20943 20005 213 213 1.02% 1.06%

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 11257573 25070.9 2154 2107 448.9
A 13 248 206249 454.71 2154 2107 448.9
A 12 189 158609 348.6 2154 2107 448.9
B 5 255 297853 685.59 2166 2088 431.4
B 12 16 215448 494.57 2166 2088 431.4
B 12 111 56432 125.97 2166 2088 431.4
C 12 250 82418 158.67 2147 2151 505.9
C 14 254 25512 46.18 2147 2151 505.9
C 13 61 14240 23.9 2147 2151 505.9
D 13 171 604668 1137.6 2129 2063 529.7
D 6 239 267125 500.39 2129 2063 529.7
D 5 171 207132 387.13 2129 2063 529.7

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