ASTROSAT CZTI

Data Quality Report

Orbit 22438

Creation date: 2024-06-27T18:40:58.713206
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/AS1A07_056T01_9000003330_22438cztM0_level2.evt modeM0/AS1A07_056T01_9000003330_22438cztM0_level2_quad_clean.evt
Size (bytes)441,829,440133,554,240
Size421.4 MB 127.4 MB
Events in quadrant A3,177,651900,094
Events in quadrant B3,334,880925,183
Events in quadrant C3,205,213883,751
Events in quadrant D3,197,233858,934

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141462
B0144922
C0141272
D0144812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6854330.481471%
B6854811.181792%
C6854961.400642%
D6854220.320980%

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 7809 6855 0 0 0.00% 0.00%
B 7809 6855 18 18 0.23% 0.26%
C 7809 6855 0 0 0.00% 0.00%
D 7809 6855 4 4 0.05% 0.06%

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 3 1 32925 197.78 813 797 162.4
A 15 174 10597 60.33 813 797 162.4
A 13 254 8897 49.86 813 797 162.4
B 5 172 37335 238.92 817 797 152.9
B 10 245 33795 215.77 817 797 152.9
B 0 190 25705 162.87 817 797 152.9
C 14 238 125991 698.19 784 790 179.3
C 1 16 14171 74.62 784 790 179.3
C 0 10 5904 28.52 784 790 179.3
D 1 52 104100 539.36 787 763 191.6
D 2 136 49725 255.55 787 763 191.6
D 7 223 40950 209.75 787 763 191.6

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