ASTROSAT CZTI

Data Quality Report

Orbit 42541

Creation date: 2024-06-27T22:41:24.819862
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/AS1A09_002T01_9000005810_42541cztM0_level2.fits modeM0/AS1A09_002T01_9000005810_42541cztM0_level2_quad_clean.evt
Size (bytes)338,503,68093,271,680
Size322.8 MB 89.0 MB
Events in quadrant A3,106,900629,309
Events in quadrant B2,536,079645,447
Events in quadrant C2,772,573610,605
Events in quadrant D3,659,595529,899

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127702
B0118802
C0120902
D0153882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5838400.685166%
B5838170.291196%
C5838260.445358%
D58384487.673861%

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 8822 5840 22 22 0.25% 0.38%
B 8822 5840 8 8 0.09% 0.14%
C 8822 5840 30 30 0.34% 0.51%
D 8822 5840 362 362 4.10% 6.20%

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 587865 4603.5 624 613 127.6
A 2 79 89703 698.38 624 613 127.6
A 13 6 8895 64.92 624 613 127.6
B 5 172 55909 464.23 619 602 119.1
B 0 245 33697 277.79 619 602 119.1
B 12 111 14842 119.53 619 602 119.1
C 15 214 244897 1721.49 607 611 141.9
C 14 254 71141 497.03 607 611 141.9
C 9 54 68796 480.5 607 611 141.9
D 2 249 724905 5081.33 583 566 142.5
D 12 233 353903 2478.7 583 566 142.5
D 1 47 67787 471.56 583 566 142.5

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