ASTROSAT CZTI

Data Quality Report

Orbit 29090

Creation date: 2024-06-27T20:00:26.804338
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/AS1T03_275T01_9000004180_29090cztM0_level2.evt modeM0/AS1T03_275T01_9000004180_29090cztM0_level2_quad_clean.evt
Size (bytes)1,002,133,440173,315,520
Size955.7 MB 165.3 MB
Events in quadrant A5,897,8361,132,408
Events in quadrant B6,687,3141,141,929
Events in quadrant C7,014,6661,083,299
Events in quadrant D9,924,0481,045,951

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253423
B0274463
C0288603
D0380954

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A122251010.826176%
B122262682.192050%
C122262071.693113%
D122254543.713701%

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 14869 12224 0 0 0.00% 0.00%
B 14870 12225 144 144 0.97% 1.18%
C 14870 12225 15 15 0.10% 0.12%
D 14869 12225 335 335 2.25% 2.74%

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 13 254 23075 71.4 1522 1491 302.3
A 3 137 14277 42.3 1522 1491 302.3
A 13 6 13150 38.57 1522 1491 302.3
B 10 245 477449 1696.38 1499 1463 280.6
B 5 255 208120 736.51 1499 1463 280.6
B 0 190 34376 117.3 1499 1463 280.6
C 3 233 987630 2923.79 1453 1461 337.3
C 14 238 233600 688.25 1453 1461 337.3
C 10 22 99994 292.13 1453 1461 337.3
D 8 195 2654780 7640.26 1462 1427 347.3
D 1 52 1283024 3690.33 1462 1427 347.3
D 2 250 234339 670.66 1462 1427 347.3

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