ASTROSAT CZTI

Data Quality Report

Orbit 08099

Creation date: 2024-06-27T15:27:55.611678
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/AS1A02_055T01_9000001114_08099cztM0_level2.evt modeM0/AS1A02_055T01_9000001114_08099cztM0_level2_quad_clean.evt
Size (bytes)1,330,908,480255,257,280
Size1.2 GB 243.4 MB
Events in quadrant A8,806,8481,578,522
Events in quadrant B9,233,8591,624,197
Events in quadrant C9,457,7891,635,744
Events in quadrant D11,494,0911,553,924

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0397395
B0405054
C0415704
D0481144

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A194372291.178165%
B194372571.322221%
C194372131.095848%
D194374432.279158%

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 21117 19441 0 0 0.00% 0.00%
B 21117 19441 11 11 0.05% 0.06%
C 21117 19441 83 83 0.39% 0.43%
D 21117 19441 219 219 1.04% 1.13%

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 0 226 21500 40.9 2284 2226 471.2
A 12 194 20301 38.36 2284 2226 471.2
A 13 251 11130 18.9 2284 2226 471.2
B 0 214 115125 255.48 2305 2248 441.8
B 11 51 76290 167.58 2305 2248 441.8
B 10 16 62728 136.88 2305 2248 441.8
C 0 224 586857 1132.73 2234 2240 516.1
C 1 16 117359 223.05 2234 2240 516.1
C 8 128 17319 29.22 2234 2240 516.1
D 1 52 2680543 4607.63 2201 2145 581.3
D 7 71 123823 209.32 2201 2145 581.3
D 5 233 112313 189.52 2201 2145 581.3

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