ASTROSAT CZTI

Data Quality Report

Orbit 20230508_A12_025T12_9000005604_level2

Creation date: 2023-05-10T10:44:05.420782
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_025T12_9000005604cztM0_level2.fits modeM0/AS1A12_025T12_9000005604cztM0_level2_quad_clean.evt
Size (bytes)262,607,040239,950,080
Size250.4 MB 228.8 MB
Events in quadrant A1,605,1401,411,433
Events in quadrant B1,512,3541,381,625
Events in quadrant C1,536,4841,324,265
Events in quadrant D1,357,3861,207,231

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05720
B05720
C05720
D05720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0608440
B0669180
C0673000
D0638630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28251400.141588%
B282518472.998124%
C282513031.072528%
D282514141.465435%

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 38587 28252 0 0 0.00% 0.00%
B 38587 28250 0 0 0.00% 0.00%
C 38587 28248 0 0 0.00% 0.00%
D 38587 28248 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 1276 8.28 419 393 106.7
A 9 19 1228 7.83 419 393 106.7
A 0 29 1195 7.52 419 393 106.7
B 2 9 1349 11.99 399 380 80.8
B 2 8 1072 8.56 399 380 80.8
B 3 80 1066 8.49 399 380 80.8
C 1 81 1268 8.34 406 380 106.5
C 1 80 1187 7.58 406 380 106.5
C 3 202 1127 7.01 406 380 106.5
D 7 3 1072 6.98 387 355 102.7
D 4 160 996 6.24 387 355 102.7
D 6 67 967 5.96 387 355 102.7

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