ASTROSAT CZTI

Data Quality Report

Orbit 39358

Creation date: 2024-06-27T22:03:37.957559
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_018T01_9000005470_39358cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39358cztM0_level2_quad_clean.evt
Size (bytes)392,719,68095,348,160
Size374.5 MB 90.9 MB
Events in quadrant A2,840,845652,053
Events in quadrant B2,466,799678,206
Events in quadrant C2,811,194638,663
Events in quadrant D5,996,060537,784

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118113
B0110532
C0117522
D0216072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5431160.294605%
B5431100.184128%
C5431180.331431%
D543161611.342294%

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 7343 5432 7 7 0.10% 0.13%
B 7343 5432 5 5 0.07% 0.09%
C 7343 5432 12 12 0.16% 0.22%
D 7343 5432 616 616 8.39% 11.34%

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 422630 3394.42 611 599 124.3
A 15 223 22703 177.78 611 599 124.3
A 2 79 14873 114.81 611 599 124.3
B 5 172 56206 473.08 612 595 117.6
B 12 111 14547 118.69 612 595 117.6
B 11 111 13209 107.31 612 595 117.6
C 15 214 248361 1795.87 595 600 138.0
C 9 187 114413 824.96 595 600 138.0
C 14 254 66510 477.74 595 600 138.0
D 12 235 3001153 21679.36 563 546 138.4
D 2 249 229509 1654.26 563 546 138.4
D 13 249 204407 1472.89 563 546 138.4

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