ASTROSAT CZTI

Data Quality Report

Orbit 28990

Creation date: 2024-06-27T19:58:52.421862
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/AS1A10_073T06_9000004156_28990cztM0_level2.evt modeM0/AS1A10_073T06_9000004156_28990cztM0_level2_quad_clean.evt
Size (bytes)539,055,360108,434,880
Size514.1 MB 103.4 MB
Events in quadrant A3,565,558730,285
Events in quadrant B3,771,756743,039
Events in quadrant C3,283,045698,481
Events in quadrant D5,257,212651,788

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150862
B0155182
C0140112
D0201297

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6604901.362810%
B66041772.680194%
C66041241.877650%
D66034366.603059%

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 7664 6605 12 12 0.16% 0.18%
B 7664 6605 73 73 0.95% 1.11%
C 7664 6605 0 0 0.00% 0.00%
D 7663 6604 336 336 4.38% 5.09%

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 0 13 228371 1354.66 843 825 168.0
A 15 192 66369 390.21 843 825 168.0
A 13 254 11927 66.09 843 825 168.0
B 10 246 391749 2492.37 828 805 156.9
B 10 245 99647 630.14 828 805 156.9
B 12 111 19302 117.92 828 805 156.9
C 14 238 128643 681.48 804 807 187.6
C 2 114 15885 80.38 804 807 187.6
C 13 61 5440 24.7 804 807 187.6
D 1 52 1597427 8520.08 792 769 187.4
D 8 195 367451 1956.69 792 769 187.4
D 7 80 138506 734.99 792 769 187.4

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