ASTROSAT CZTI

Data Quality Report

Orbit 40634

Creation date: 2024-06-27T22:18:30.483953
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_029T01_9000005556_40634cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40634cztM0_level2_quad_clean.evt
Size (bytes)296,524,80087,531,840
Size282.8 MB 83.5 MB
Events in quadrant A2,713,753599,923
Events in quadrant B2,706,198618,287
Events in quadrant C2,464,505580,060
Events in quadrant D2,702,736502,546

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109173
B0112262
C0103042
D0113482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4986100.200562%
B4986460.922583%
C498620.040112%
D49863667.340554%

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 7049 4987 4 4 0.06% 0.08%
B 7049 4987 27 27 0.38% 0.54%
C 7049 4987 0 0 0.00% 0.00%
D 7049 4987 51 51 0.72% 1.02%

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 450419 3815.38 580 568 117.9
A 2 79 26375 218.88 580 568 117.9
A 3 137 6128 47.16 580 568 117.9
B 5 255 151091 1363.39 572 557 110.4
B 0 190 138190 1246.55 572 557 110.4
B 0 229 126232 1138.24 572 557 110.4
C 15 214 223389 1729.98 554 559 128.8
C 14 254 70343 541.78 554 559 128.8
C 0 10 5347 37.17 554 559 128.8
D 13 249 161675 1219.08 534 520 132.2
D 2 250 147364 1110.82 534 520 132.2
D 12 191 142429 1073.49 534 520 132.2

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