ASTROSAT CZTI

Data Quality Report

Orbit 38441

Creation date: 2024-06-27T21:52:47.218086
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/AS1A12_018T01_9000005386_38441cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38441cztM0_level2_quad_clean.evt
Size (bytes)649,008,000175,567,680
Size618.9 MB 167.4 MB
Events in quadrant A5,591,9741,173,048
Events in quadrant B5,954,1981,188,880
Events in quadrant C5,377,8541,156,582
Events in quadrant D6,270,0411,055,583

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231194
B0249723
C0226673
D0261863

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10703440.411100%
B107032152.008783%
C10703220.205550%
D107032152.008783%

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 13569 10705 28 28 0.21% 0.26%
B 13569 10705 123 123 0.91% 1.15%
C 13569 10705 18 18 0.13% 0.17%
D 13569 10705 161 161 1.19% 1.50%

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 732017 3038.98 1194 1171 240.5
A 9 143 156549 646.09 1194 1171 240.5
A 13 248 54765 222.85 1194 1171 240.5
B 0 183 423441 1870.6 1180 1149 225.8
B 4 232 375747 1659.33 1180 1149 225.8
B 5 184 219611 967.71 1180 1149 225.8
C 15 214 448824 1659.01 1162 1167 269.8
C 14 254 326038 1203.96 1162 1167 269.8
C 3 233 21362 74.84 1162 1167 269.8
D 2 250 342064 1229.15 1156 1125 277.4
D 13 249 228630 820.2 1156 1125 277.4
D 12 235 201616 722.81 1156 1125 277.4

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