ASTROSAT CZTI

Data Quality Report

Orbit 42397

Creation date: 2024-06-27T22:39:48.709644
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/AS1T05_138T01_9000005802_42397cztM0_level2.fits modeM0/AS1T05_138T01_9000005802_42397cztM0_level2_quad_clean.evt
Size (bytes)369,544,32099,054,720
Size352.4 MB 94.5 MB
Events in quadrant A3,315,972661,961
Events in quadrant B2,938,489676,781
Events in quadrant C2,947,770647,843
Events in quadrant D4,002,102586,506

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133512
B0130502
C0125982
D0161172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6101220.360597%
B6102701.147165%
C6102100.163881%
D61021412.310718%

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 9297 6103 7 7 0.08% 0.11%
B 9298 6104 43 43 0.46% 0.70%
C 9298 6104 7 7 0.08% 0.11%
D 9298 6104 120 120 1.29% 1.97%

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 625947 4567.46 669 654 136.9
A 14 223 59652 430.95 669 654 136.9
A 13 6 20791 147.09 669 654 136.9
B 15 85 115968 899.4 663 645 128.2
B 5 172 80629 623.79 663 645 128.2
B 4 141 45636 350.88 663 645 128.2
C 15 214 258796 1703.91 649 653 151.5
C 4 254 117478 771.12 649 653 151.5
C 14 254 28050 180.84 649 653 151.5
D 2 16 459727 2889.78 643 622 158.9
D 1 47 367937 2312.02 643 622 158.9
D 1 52 252524 1585.56 643 622 158.9

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