ASTROSAT CZTI

Data Quality Report

Orbit 29394

Creation date: 2024-06-27T20:03:30.745573
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_101T19_9000004228_29394cztM0_level2.evt modeM0/AS1A10_101T19_9000004228_29394cztM0_level2_quad_clean.evt
Size (bytes)1,228,979,520115,306,560
Size1.1 GB 110.0 MB
Events in quadrant A5,749,471745,322
Events in quadrant B4,718,425771,048
Events in quadrant C5,693,682738,206
Events in quadrant D20,419,803578,930

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233162
B0199362
C0231922
D0671012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A94673954.172388%
B94681021.077313%
C94681992.101817%
D9468636167.184199%

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 11428 9469 173 173 1.51% 1.83%
B 11429 9470 14 14 0.12% 0.15%
C 11429 9470 1 1 0.01% 0.01%
D 11429 9469 6277 6277 54.92% 66.29%

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 1 113 1246802 5325.54 1166 1145 233.9
A 13 254 17259 68.89 1166 1145 233.9
A 3 137 11464 44.12 1166 1145 233.9
B 10 245 60349 265.02 1173 1146 223.4
B 0 229 32280 139.37 1173 1146 223.4
B 12 111 28034 120.36 1173 1146 223.4
C 3 233 1047493 3963.2 1131 1140 264.0
C 14 238 192715 725.61 1131 1140 264.0
C 2 114 22354 80.35 1131 1140 264.0
D 8 195 13341236 64276.24 874 853 207.5
D 1 52 2253267 10852.52 874 853 207.5
D 12 33 1389121 6688.91 874 853 207.5

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