ASTROSAT CZTI

Data Quality Report

Orbit 20230615_A12_077T12_9000005692_level2

Creation date: 2023-06-17T11:05:57.856286
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_077T12_9000005692cztM0_level2.fits modeM0/AS1A12_077T12_9000005692cztM0_level2_quad_clean.evt
Size (bytes)944,559,3601,011,741,120
Size900.8 MB 964.9 MB
Events in quadrant A5,742,1366,272,934
Events in quadrant B5,499,4446,283,305
Events in quadrant C5,527,9985,869,913
Events in quadrant D4,711,3225,093,111

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04210
B04210
C04210
D04210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02269720
B02133050
C02242640
D02999640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021260
B021280
C021260
D021260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1039273110.299249%
B1039272360.227082%
C10392619991.923484%
D10392762606.023459%

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 147346 103925 0 0 0.00% 0.00%
B 147345 103924 0 0 0.00% 0.00%
C 147345 103790 0 0 0.00% 0.00%
D 147345 103771 0 0 0.00% 0.00%

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 7 110 4697 8.82 1496 1396 374.2
A 9 19 4690 8.8 1496 1396 374.2
A 0 29 4670 8.75 1496 1396 374.2
B 2 9 4718 11.6 1453 1379 287.8
B 3 80 4031 9.21 1453 1379 287.8
B 5 128 3894 8.74 1453 1379 287.8
C 1 81 4473 8.38 1457 1361 371.3
C 3 202 4406 8.2 1457 1361 371.3
C 3 203 4356 8.07 1457 1361 371.3
D 7 3 3516 6.38 1350 1230 358.5
D 10 189 3381 6.0 1350 1230 358.5
D 4 160 3344 5.9 1350 1230 358.5

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