ASTROSAT CZTI

Data Quality Report

Orbit 39212

Creation date: 2024-06-27T22:01:51.262535
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_054T04_9000005446_39212cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39212cztM0_level2_quad_clean.evt
Size (bytes)489,024,00083,378,880
Size466.4 MB 79.5 MB
Events in quadrant A2,693,434619,502
Events in quadrant B2,499,903631,270
Events in quadrant C2,631,185587,468
Events in quadrant D9,865,529315,507

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302
B0292
C0306
D0303

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011428166
B01120799
C011442140
D033837928

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5316120.225734%
B5332180.337584%
C5305280.527804%
D5227252748.345131%

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 7191 5375 3 3 0.04% 0.06%
B 7190 5377 10 10 0.14% 0.19%
C 7192 5367 23 23 0.32% 0.43%
D 7192 5343 2260 2260 31.42% 42.30%

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 10 83 409776 3452.16 587 576 118.5
A 15 174 9570 75.88 587 576 118.5
A 13 254 7624 59.46 587 576 118.5
B 5 184 79216 703.23 583 568 111.8
B 5 172 71850 637.37 583 568 111.8
B 0 190 57723 511.05 583 568 111.8
C 15 214 220564 1697.51 560 563 129.6
C 9 187 188430 1449.57 560 563 129.6
C 3 233 28061 212.17 560 563 129.6
D 12 235 7620496 68520.97 451 437 111.2
D 2 249 335507 3013.01 451 437 111.2
D 13 249 44289 394.33 451 437 111.2

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