ASTROSAT CZTI

Data Quality Report

Orbit 30778

Creation date: 2024-06-27T20:19:31.811073
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_071T18_9000004448_30778cztM0_level2.evt modeM0/AS1A10_071T18_9000004448_30778cztM0_level2_quad_clean.evt
Size (bytes)316,756,80030,985,920
Size302.1 MB 29.6 MB
Events in quadrant A1,896,508181,095
Events in quadrant B2,701,207182,448
Events in quadrant C2,055,169172,214
Events in quadrant D2,711,488164,011

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076411
B0103451
C081421
D0102631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A33541745.187835%
B33542517.483602%
C33542186.499702%
D33542988.884914%

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 3639 3354 11 11 0.30% 0.33%
B 3639 3354 1 1 0.03% 0.03%
C 3639 3355 15 15 0.41% 0.45%
D 3639 3355 249 249 6.84% 7.42%

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 0 13 146449 1548.13 453 443 94.3
A 13 254 5727 56.03 453 443 94.3
A 3 137 5025 48.58 453 443 94.3
B 6 159 911121 10194.68 446 433 89.3
B 0 190 14380 156.13 446 433 89.3
B 0 230 14028 152.19 446 433 89.3
C 0 10 254622 2468.22 429 431 103.0
C 14 238 67556 651.79 429 431 103.0
C 3 233 49733 478.73 429 431 103.0
D 8 195 912960 7795.81 434 424 117.1
D 13 249 60203 510.69 434 424 117.1
D 12 233 25405 213.41 434 424 117.1

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