ASTROSAT CZTI

Data Quality Report

Orbit 35797

Creation date: 2022-05-14T11:01:24.823992
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/AS1A09_029T09_9000005138_35797cztM0_level2.evt modeM0/AS1A09_029T09_9000005138_35797cztM0_level2_quad_clean.evt
Size (bytes)1,021,849,920217,958,400
Size974.5 MB 207.9 MB
Events in quadrant A8,023,9971,463,965
Events in quadrant B8,016,2111,462,399
Events in quadrant C6,389,3841,455,032
Events in quadrant D7,698,3641,381,679

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0315783
B0316623
C0264443
D0305263

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121273022.490311%
B121274743.908634%
C121271140.940051%
D121273853.174734%

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 15653 12129 246 246 1.57% 2.03%
B 15653 12129 334 334 2.13% 2.75%
C 15653 12129 81 81 0.52% 0.67%
D 15653 12129 319 319 2.04% 2.63%

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 15 169 2146355 7473.81 1443 1419 287.0
A 10 83 296753 1029.06 1443 1419 287.0
A 3 137 14114 44.23 1443 1419 287.0
B 5 172 774146 2928.54 1411 1378 263.9
B 4 171 694685 2627.41 1411 1378 263.9
B 4 232 345315 1303.41 1411 1378 263.9
C 15 214 504685 1594.34 1385 1395 315.7
C 0 10 328711 1036.88 1385 1395 315.7
C 10 49 110140 344.49 1385 1395 315.7
D 13 249 1106846 3323.0 1389 1354 332.7
D 8 195 342721 1026.11 1389 1354 332.7
D 10 199 261617 782.32 1389 1354 332.7

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