ASTROSAT CZTI

Data Quality Report

Orbit 37544

Creation date: 2024-06-27T21:41:20.407752
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_051T01_9000005334_37544cztM0_level2.evt modeM0/AS1T05_051T01_9000005334_37544cztM0_level2_quad_clean.evt
Size (bytes)493,214,40076,898,880
Size470.4 MB 73.3 MB
Events in quadrant A4,033,181486,898
Events in quadrant B3,295,705492,732
Events in quadrant C3,112,223495,055
Events in quadrant D4,112,760458,498

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156883
B0134112
C0127922
D0160282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5655731.290893%
B56551282.263484%
C5655731.290893%
D56562764.879774%

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 7239 5656 43 43 0.59% 0.76%
B 7239 5656 82 82 1.13% 1.45%
C 7239 5656 69 69 0.95% 1.22%
D 7240 5657 251 251 3.47% 4.44%

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 15 222 913575 6901.9 646 632 132.3
A 10 83 331193 2499.06 646 632 132.3
A 6 10 245288 1849.61 646 632 132.3
B 5 255 285099 2299.53 640 623 123.7
B 5 172 145955 1174.78 640 623 123.7
B 4 81 66168 529.83 640 623 123.7
C 15 214 244292 1673.78 624 628 145.6
C 14 254 217811 1491.88 624 628 145.6
C 0 10 134591 920.22 624 628 145.6
D 2 249 470555 3117.52 610 591 150.7
D 12 235 293184 1940.92 610 591 150.7
D 10 199 201468 1332.52 610 591 150.7

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