ASTROSAT CZTI

Data Quality Report

Orbit 28654

Creation date: 2024-06-27T19:54:30.826310
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_073T08_9000004112_28654cztM0_level2.evt modeM0/AS1A10_073T08_9000004112_28654cztM0_level2_quad_clean.evt
Size (bytes)1,547,686,080233,136,000
Size1.4 GB 222.3 MB
Events in quadrant A9,213,7941,525,833
Events in quadrant B9,847,0701,530,789
Events in quadrant C8,906,4291,470,902
Events in quadrant D17,663,6141,264,933

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0395393
B0411033
C0381563
D0649703

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183991480.804392%
B183992001.087016%
C183994842.630578%
D18400255513.885870%

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 20259 18402 53 53 0.26% 0.29%
B 20259 18402 36 36 0.18% 0.20%
C 20259 18402 4 4 0.02% 0.02%
D 20260 18403 2367 2367 11.68% 12.86%

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 564918 1261.4 2212 2169 446.1
A 12 16 46358 99.05 2212 2169 446.1
A 14 238 40300 85.47 2212 2169 446.1
B 10 245 1084572 2596.61 2193 2140 416.9
B 12 111 52430 120.64 2193 2140 416.9
B 11 111 47211 108.12 2193 2140 416.9
C 14 238 444721 890.31 2114 2133 497.1
C 14 254 168642 334.95 2114 2133 497.1
C 2 16 38169 72.49 2114 2133 497.1
D 1 52 8191467 17195.29 1980 1927 476.3
D 8 195 1338862 2807.12 1980 1927 476.3
D 13 104 236140 491.77 1980 1927 476.3

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