ASTROSAT CZTI

Data Quality Report

Orbit 37328

Creation date: 2024-06-27T21:38:31.680475
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/AS1A11_030T02_9000005310_37328cztM0_level2.evt modeM0/AS1A11_030T02_9000005310_37328cztM0_level2_quad_clean.evt
Size (bytes)763,799,04078,016,320
Size728.4 MB 74.4 MB
Events in quadrant A2,990,640562,225
Events in quadrant B2,858,678576,415
Events in quadrant C4,594,996528,283
Events in quadrant D12,320,332313,369

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124153
B0120982
C0171112
D0402552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5437490.901232%
B5437831.526577%
C54375349.821593%
D5437410475.482803%

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 7170 5438 27 27 0.38% 0.50%
B 7170 5438 49 49 0.68% 0.90%
C 7170 5438 467 467 6.51% 8.59%
D 7170 5438 4189 4189 58.42% 77.03%

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 277506 2174.59 625 614 127.3
A 9 143 94985 741.15 625 614 127.3
A 13 248 92278 719.89 625 614 127.3
B 5 172 180046 1507.46 625 608 119.0
B 5 184 60647 504.39 625 608 119.0
B 0 190 50758 421.31 625 608 119.0
C 1 23 1848381 13366.25 589 593 138.2
C 15 214 218986 1579.78 589 593 138.2
C 0 10 102999 740.77 589 593 138.2
D 12 227 10262869 102814.45 407 397 99.8
D 10 253 131328 1311.73 407 397 99.8
D 2 249 126058 1258.93 407 397 99.8

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