ASTROSAT CZTI

Data Quality Report

Orbit 40792

Creation date: 2024-06-27T22:20:33.302066
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_095T02_9000005568_40792cztM0_level2.fits modeM0/AS1A12_095T02_9000005568_40792cztM0_level2_quad_clean.evt
Size (bytes)335,540,16086,872,320
Size320.0 MB 82.8 MB
Events in quadrant A2,874,595590,833
Events in quadrant B3,578,722589,405
Events in quadrant C2,690,793575,247
Events in quadrant D2,882,208520,782

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116333
B0138832
C0110812
D0122272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5058200.395413%
B50583296.504547%
C5058891.759589%
D50581633.222618%

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 7001 5059 11 11 0.16% 0.22%
B 7000 5058 342 342 4.89% 6.76%
C 7000 5058 94 94 1.34% 1.86%
D 7001 5059 140 140 2.00% 2.77%

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 481258 4159.98 564 554 115.6
A 13 248 135200 1165.22 564 554 115.6
A 12 189 46562 398.15 564 554 115.6
B 12 18 1071726 10002.07 555 539 107.1
B 7 202 201884 1880.03 555 539 107.1
B 5 255 69564 644.51 555 539 107.1
C 0 10 237120 1827.62 553 556 129.4
C 15 214 216848 1671.0 553 556 129.4
C 14 254 53600 409.8 553 556 129.4
D 2 249 421697 3131.65 542 527 134.5
D 1 47 124631 922.79 542 527 134.5
D 2 153 109662 811.48 542 527 134.5

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