ASTROSAT CZTI

Data Quality Report

Orbit 25712

Creation date: 2024-06-27T19:20:41.292639
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_008T06_9000003748_25712cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25712cztM0_level2_quad_clean.evt
Size (bytes)874,408,320162,270,720
Size833.9 MB 154.8 MB
Events in quadrant A6,198,7781,034,698
Events in quadrant B6,000,4941,072,381
Events in quadrant C5,821,9111,024,428
Events in quadrant D7,661,490967,515

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263230
B0256380
C0252110
D0309510

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063
B074
C063
D074

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118534523.813381%
B119664013.351162%
C120283472.884935%
D118445194.381966%

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 13312 12464 74 74 0.56% 0.59%
B 13312 12579 2 2 0.02% 0.02%
C 13312 12610 0 0 0.00% 0.00%
D 13312 12522 254 254 1.91% 2.03%

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 485317 1639.5 1458 1427 295.1
A 4 2 90828 302.91 1458 1427 295.1
A 13 254 16442 50.87 1458 1427 295.1
B 0 219 72190 246.26 1480 1440 287.3
B 0 190 54263 183.86 1480 1440 287.3
B 12 111 35454 118.39 1480 1440 287.3
C 14 238 224827 666.4 1421 1429 335.2
C 3 233 40433 116.35 1421 1429 335.2
C 8 128 10976 28.48 1421 1429 335.2
D 7 80 1271597 3718.92 1389 1345 341.6
D 8 195 582924 1702.69 1389 1345 341.6
D 1 52 447768 1306.99 1389 1345 341.6

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