ASTROSAT CZTI

Data Quality Report

Orbit 42792

Creation date: 2024-06-27T22:44:17.045565
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/AS1A05_013T01_9000005822_42792cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42792cztM0_level2_quad_clean.evt
Size (bytes)325,820,16090,452,160
Size310.7 MB 86.3 MB
Events in quadrant A2,881,907620,948
Events in quadrant B2,387,220629,213
Events in quadrant C2,567,512601,747
Events in quadrant D3,827,606530,274

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115152
B0104432
C0106612
D0148742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5088120.235849%
B5088110.216195%
C5088260.511006%
D50883426.721698%

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 7090 5089 6 6 0.08% 0.12%
B 7090 5089 4 4 0.06% 0.08%
C 7090 5089 22 22 0.31% 0.43%
D 7090 5089 290 290 4.09% 5.70%

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 552897 4574.25 587 575 120.7
A 2 79 20257 163.0 587 575 120.7
A 13 248 19257 154.72 587 575 120.7
B 0 229 70575 622.4 583 566 112.5
B 12 0 14250 121.66 583 566 112.5
B 12 111 14110 120.41 583 566 112.5
C 15 214 219462 1651.64 569 575 132.5
C 14 254 93890 704.12 569 575 132.5
C 0 207 21875 160.72 569 575 132.5
D 2 249 1150894 8551.59 551 536 134.5
D 1 52 395437 2935.63 551 536 134.5
D 5 70 60121 442.94 551 536 134.5

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