ASTROSAT CZTI

Data Quality Report

Orbit 22756

Creation date: 2024-06-27T18:45:14.820129
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/AS1A08_007T01_9000003362_22756cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22756cztM0_level2_quad_clean.evt
Size (bytes)260,138,88032,385,600
Size248.1 MB 30.9 MB
Events in quadrant A1,555,989198,255
Events in quadrant B1,642,992199,078
Events in quadrant C1,541,161189,375
Events in quadrant D2,928,695175,481

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064261
B066761
C064521
D0108801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A305720.065424%
B305880.261609%
C3058160.523218%
D305847215.434925%

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 3057 3057 0 0 0.00% 0.00%
B 3058 3058 3 3 0.10% 0.10%
C 3058 3058 0 0 0.00% 0.00%
D 3058 3058 382 382 12.49% 12.49%

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 13 254 4859 55.93 403 397 79.8
A 0 226 3512 39.05 403 397 79.8
A 3 137 2916 31.58 403 397 79.8
B 0 197 26725 358.68 394 386 73.4
B 0 228 26411 354.4 394 386 73.4
B 0 190 13682 181.06 394 386 73.4
C 14 238 63196 710.9 379 381 88.4
C 13 61 2694 26.18 379 381 88.4
C 3 202 939 6.32 379 381 88.4
D 1 52 1394586 16041.41 360 350 86.9
D 2 152 91803 1052.21 360 350 86.9
D 12 233 24980 283.38 360 350 86.9

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