ASTROSAT CZTI

Data Quality Report

Orbit 36707

Creation date: 2024-06-27T21:30:33.973432
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_001T09_9000005236_36707cztM0_level2.evt modeM0/AS1C07_001T09_9000005236_36707cztM0_level2_quad_clean.evt
Size (bytes)439,724,16097,292,160
Size419.4 MB 92.8 MB
Events in quadrant A2,523,640656,879
Events in quadrant B2,772,085663,265
Events in quadrant C3,864,517640,726
Events in quadrant D3,797,618615,183

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110693
B0117842
C0148802
D0149612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A528750.094572%
B5287380.718744%
C52873256.147153%
D52873165.976925%

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 7081 5288 2 2 0.03% 0.04%
B 7081 5288 23 23 0.32% 0.43%
C 7081 5288 278 278 3.93% 5.26%
D 7081 5288 294 294 4.15% 5.56%

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 210600 1790.19 583 570 117.3
A 7 3 16032 131.79 583 570 117.3
A 9 143 15643 128.47 583 570 117.3
B 0 221 149591 1342.98 583 569 111.0
B 5 255 117270 1051.7 583 569 111.0
B 5 172 56552 504.51 583 569 111.0
C 0 10 1040345 7977.14 560 564 130.3
C 14 254 343517 2631.12 560 564 130.3
C 15 214 235536 1802.69 560 564 130.3
D 13 249 1100725 8177.66 555 541 134.5
D 13 171 142776 1057.23 555 541 134.5
D 2 250 115547 854.84 555 541 134.5

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