ASTROSAT CZTI

Data Quality Report

Orbit 28449

Creation date: 2024-06-27T19:51:51.682236
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_101T21_9000004090_28449cztM0_level2.evt modeM0/AS1A10_101T21_9000004090_28449cztM0_level2_quad_clean.evt
Size (bytes)531,308,160126,564,480
Size506.7 MB 120.7 MB
Events in quadrant A3,263,246844,376
Events in quadrant B3,323,075864,463
Events in quadrant C3,367,965830,230
Events in quadrant D5,648,860793,851

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147700
B0147580
C0148780
D0218660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7181660.919092%
B71811061.476118%
C71821381.921470%
D71824516.279588%

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 7456 7182 2 2 0.03% 0.03%
B 7456 7182 0 0 0.00% 0.00%
C 7457 7183 6 6 0.08% 0.08%
D 7457 7184 667 667 8.94% 9.28%

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 15 174 34761 202.27 836 818 167.8
A 13 254 10796 59.46 836 818 167.8
A 3 137 8398 45.17 836 818 167.8
B 12 111 20058 120.31 833 811 160.0
B 10 245 18777 112.3 833 811 160.0
B 11 111 18531 110.76 833 811 160.0
C 14 238 128906 679.84 806 810 188.4
C 3 233 70383 369.24 806 810 188.4
C 7 220 13290 66.23 806 810 188.4
D 8 195 1882214 9802.89 803 779 191.9
D 1 52 404981 2106.02 803 779 191.9
D 2 250 204925 1063.67 803 779 191.9

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