ASTROSAT CZTI

Data Quality Report

Orbit 36686

Creation date: 2024-06-27T21:30:16.946683
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_041T01_9000005234_36686cztM0_level2.evt modeM0/AS1T05_041T01_9000005234_36686cztM0_level2_quad_clean.evt
Size (bytes)482,811,840101,160,000
Size460.4 MB 96.5 MB
Events in quadrant A2,637,214689,280
Events in quadrant B2,940,003687,331
Events in quadrant C4,512,690642,516
Events in quadrant D4,150,621651,290

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115282
B0124701
C0169541
D0161491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A561950.088984%
B5619611.085602%
C561969812.422139%
D56192574.573768%

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 6931 5620 3 3 0.04% 0.05%
B 6931 5620 24 24 0.35% 0.43%
C 6931 5620 620 620 8.95% 11.03%
D 6931 5620 236 236 3.40% 4.20%

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 179578 1403.31 624 611 127.5
A 15 223 30797 236.69 624 611 127.5
A 13 6 12219 91.02 624 611 127.5
B 0 189 150087 1259.81 618 600 118.7
B 5 255 147166 1235.19 618 600 118.7
B 4 232 77059 644.36 618 600 118.7
C 1 23 1769056 13219.14 575 581 133.8
C 15 214 236073 1760.27 575 581 133.8
C 0 10 162226 1208.28 575 581 133.8
D 2 249 591930 4070.97 600 584 145.3
D 12 233 378058 2598.62 600 584 145.3
D 7 55 133587 915.63 600 584 145.3

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