ASTROSAT CZTI

Data Quality Report

Orbit 39955

Creation date: 2024-06-27T22:10:33.932250
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/AS1C07_001T01_9000005514_39955cztM0_level2.fits modeM0/AS1C07_001T01_9000005514_39955cztM0_level2_quad_clean.evt
Size (bytes)798,482,880217,848,960
Size761.5 MB 207.8 MB
Events in quadrant A7,525,3581,494,292
Events in quadrant B6,781,7851,487,748
Events in quadrant C6,063,9161,439,350
Events in quadrant D8,195,5831,292,214

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300174
B0290005
C0262873
D0332073

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127752481.941292%
B127744453.483639%
C12775300.234834%
D127754743.710372%

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 19084 12778 227 227 1.19% 1.78%
B 19083 12777 372 372 1.95% 2.91%
C 19084 12778 24 24 0.13% 0.19%
D 19084 12777 461 461 2.42% 3.61%

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 967618 3443.03 1410 1385 280.6
A 6 10 512890 1822.67 1410 1385 280.6
A 13 248 254748 902.82 1410 1385 280.6
B 4 171 650162 2508.59 1375 1339 258.6
B 5 255 553910 2136.44 1375 1339 258.6
B 0 230 63605 240.74 1375 1339 258.6
C 15 214 525872 1704.71 1350 1356 307.7
C 0 10 84533 270.33 1350 1356 307.7
C 9 54 81844 261.59 1350 1356 307.7
D 2 249 993685 3040.95 1344 1302 326.3
D 12 227 704935 2156.14 1344 1302 326.3
D 12 233 298080 909.41 1344 1302 326.3

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