ASTROSAT CZTI

Data Quality Report

Orbit 41242

Creation date: 2024-06-27T22:26:23.409042
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/AS1T05_102T01_9000005634_41242cztM0_level2.fits modeM0/AS1T05_102T01_9000005634_41242cztM0_level2_quad_clean.evt
Size (bytes)360,711,36089,870,400
Size344.0 MB 85.7 MB
Events in quadrant A3,250,469619,811
Events in quadrant B2,890,394628,296
Events in quadrant C3,136,467595,164
Events in quadrant D3,684,464526,641

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126033
B0116962
C0122382
D0141312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5015641.276171%
B50151783.549352%
C50151713.409771%
D50154048.055833%

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 7078 5016 56 56 0.79% 1.12%
B 7078 5016 117 117 1.65% 2.33%
C 7078 5016 159 159 2.25% 3.17%
D 7078 5016 385 385 5.44% 7.68%

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 495803 4031.53 601 589 122.8
A 0 8 276004 2242.15 601 589 122.8
A 7 3 102103 826.42 601 589 122.8
B 0 186 503351 4467.02 587 572 112.6
B 0 229 63013 554.77 587 572 112.6
B 12 111 13739 116.98 587 572 112.6
C 0 10 428326 3171.98 577 582 134.9
C 15 214 212838 1574.01 577 582 134.9
C 9 54 93359 688.0 577 582 134.9
D 13 249 804173 5844.73 563 547 137.5
D 2 249 534175 3881.05 563 547 137.5
D 5 222 79665 575.42 563 547 137.5

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