ASTROSAT CZTI

Data Quality Report

Orbit 39301

Creation date: 2024-06-27T22:02:54.680754
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_042T01_9000005462_39301cztM0_level2.fits modeM0/AS1A12_042T01_9000005462_39301cztM0_level2_quad_clean.evt
Size (bytes)472,109,76068,656,320
Size450.2 MB 65.5 MB
Events in quadrant A2,703,566532,190
Events in quadrant B2,051,979554,171
Events in quadrant C2,588,737514,834
Events in quadrant D9,783,888163,492

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107781
B091871
C0104291
D0321431

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4463721.613265%
B4463120.268877%
C4463471.053103%
D4463311369.751288%

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 6404 4464 64 64 1.00% 1.43%
B 6404 4464 0 0 0.00% 0.00%
C 6404 4464 53 53 0.83% 1.19%
D 6404 4464 2802 2802 43.75% 62.77%

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 13 248 442305 4363.67 496 487 101.2
A 10 83 342926 3382.14 496 487 101.2
A 3 137 5168 46.23 496 487 101.2
B 5 255 43570 450.31 498 484 95.7
B 5 172 17273 175.47 498 484 95.7
B 0 213 16029 162.47 498 484 95.7
C 14 254 521980 4743.03 478 482 110.0
C 15 214 185456 1682.34 478 482 110.0
C 3 233 11477 100.0 478 482 110.0
D 12 235 8155816 102193.07 327 317 79.8
D 13 249 159826 1998.74 327 317 79.8
D 5 222 65919 822.03 327 317 79.8

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