ASTROSAT CZTI

Data Quality Report

Orbit 40751

Creation date: 2024-06-27T22:19:59.454450
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_068T02_9000005564_40751cztM0_level2.fits modeM0/AS1A12_068T02_9000005564_40751cztM0_level2_quad_clean.evt
Size (bytes)343,146,24085,049,280
Size327.2 MB 81.1 MB
Events in quadrant A2,835,669585,049
Events in quadrant B2,275,523610,923
Events in quadrant C4,489,776555,804
Events in quadrant D2,719,204480,217

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114503
B099572
C0166752
D0114702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4900160.326531%
B4900100.204082%
C49003096.306122%
D490049910.183673%

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 7024 4901 9 9 0.13% 0.18%
B 7024 4901 0 0 0.00% 0.00%
C 7024 4901 373 373 5.31% 7.61%
D 7023 4900 61 61 0.87% 1.24%

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 460216 4044.96 559 548 113.6
A 6 10 86001 751.96 559 548 113.6
A 12 189 68189 595.22 559 548 113.6
B 0 229 38109 350.33 557 544 107.2
B 4 170 21198 192.62 557 544 107.2
B 4 171 17125 154.63 557 544 107.2
C 9 187 2129134 17139.01 533 538 124.2
C 15 214 209928 1685.96 533 538 124.2
C 0 10 63143 504.08 533 538 124.2
D 2 249 379083 3014.32 508 494 125.6
D 12 191 143702 1140.22 508 494 125.6
D 13 249 107608 852.84 508 494 125.6

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