ASTROSAT CZTI

Data Quality Report

Orbit 39939

Creation date: 2024-06-27T22:10:21.599479
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_044T21_9000005512_39939cztM0_level2.fits modeM0/AS1A12_044T21_9000005512_39939cztM0_level2_quad_clean.evt
Size (bytes)18,129,6005,068,800
Size17.3 MB 4.8 MB
Events in quadrant A177,62627,077
Events in quadrant B149,45231,425
Events in quadrant C169,97923,087
Events in quadrant D147,82223,297

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049234234
B064845853
C052304553
D056665045

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29010.344828%
B30910.323625%
C27020.740741%
D28310.353357%

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 6591 417 0 0 0.00% 0.00%
B 6595 430 0 0 0.00% 0.00%
C 6586 389 1 1 0.02% 0.26%
D 6597 412 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 10 83 42114 4609.76 34 34 9.1
A 7 191 583 60.14 34 34 9.1
A 3 137 355 35.16 34 34 9.1
B 5 255 4790 528.2 36 35 9.0
B 0 183 1233 133.08 36 35 9.0
B 12 111 816 86.76 36 35 9.0
C 9 54 35028 3954.85 30 30 8.8
C 15 214 12238 1379.53 30 30 8.8
C 0 10 2358 263.07 30 30 8.8
D 12 227 9642 973.3 32 31 9.9
D 2 249 9530 961.95 32 31 9.9
D 3 238 1682 167.2 32 31 9.9

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