ASTROSAT CZTI

Data Quality Report

Orbit 29935

Creation date: 2024-06-27T20:08:57.052089
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/AS1A10_053T05_9000004296_29935cztM0_level2.evt modeM0/AS1A10_053T05_9000004296_29935cztM0_level2_quad_clean.evt
Size (bytes)600,243,84085,844,160
Size572.4 MB 81.9 MB
Events in quadrant A3,487,592564,898
Events in quadrant B5,236,238559,837
Events in quadrant C5,050,525509,857
Events in quadrant D3,974,551521,832

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142071
B0193861
C0193251
D0160681

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6344981.544767%
B63451492.348306%
C634586413.617021%
D63451402.206462%

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 7649 6345 0 0 0.00% 0.00%
B 7650 6346 1 1 0.01% 0.02%
C 7650 6346 359 359 4.69% 5.66%
D 7650 6346 49 49 0.64% 0.77%

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 13 254 12256 64.6 899 885 176.0
A 8 192 11691 61.39 899 885 176.0
A 12 96 8644 44.08 899 885 176.0
B 6 159 1797826 11110.71 874 856 161.7
B 12 111 18650 110.02 874 856 161.7
B 11 111 17157 100.79 874 856 161.7
C 15 208 1389257 7713.67 793 803 180.0
C 3 233 277656 1538.08 793 803 180.0
C 14 238 187431 1036.83 793 803 180.0
D 8 195 403021 2031.66 857 838 198.0
D 2 250 196408 987.94 857 838 198.0
D 1 52 28105 137.74 857 838 198.0

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