ASTROSAT CZTI

Data Quality Report

Orbit 21727

Creation date: 2024-06-27T18:31:30.937724
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/AS1A07_010T04_9000003220_21727cztM0_level2.evt modeM0/AS1A07_010T04_9000003220_21727cztM0_level2_quad_clean.evt
Size (bytes)1,126,494,720184,680,000
Size1.0 GB 176.1 MB
Events in quadrant A6,572,0421,224,265
Events in quadrant B5,976,2181,281,747
Events in quadrant C5,705,1421,233,791
Events in quadrant D15,096,4241,067,107

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268953
B0249903
C0237403
D0526933

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A113564894.306094%
B11356980.862980%
C11356880.774921%
D11356291325.651638%

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 14061 11358 337 337 2.40% 2.97%
B 14061 11358 20 20 0.14% 0.18%
C 14061 11358 0 0 0.00% 0.00%
D 14061 11357 2875 2875 20.45% 25.31%

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 15 236 1123539 4053.7 1395 1365 276.8
A 2 79 40208 140.31 1395 1365 276.8
A 6 16 34042 118.04 1395 1365 276.8
B 3 64 151309 573.25 1435 1401 261.5
B 0 197 55354 206.32 1435 1401 261.5
B 0 230 51623 192.05 1435 1401 261.5
C 14 238 224329 688.77 1405 1420 323.6
C 13 61 9627 25.36 1405 1420 323.6
C 8 208 4517 9.57 1405 1420 323.6
D 12 235 8646177 28205.97 1277 1242 306.5
D 7 223 1064545 3469.26 1277 1242 306.5
D 2 136 218557 709.04 1277 1242 306.5

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