ASTROSAT CZTI

Data Quality Report

Orbit 35588

Creation date: 2022-04-28T18:23:09.599456
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/AS1A10_065T04_9000005098_35588cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35588cztM0_level2_quad_clean.evt
Size (bytes)332,573,76061,064,640
Size317.2 MB 58.2 MB
Events in quadrant A1,916,910410,036
Events in quadrant B3,175,111373,864
Events in quadrant C2,198,427404,225
Events in quadrant D2,512,850382,753

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080572
B0120081
C088331
D0100011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A393370.177981%
B393353413.577422%
C3933731.856089%
D39331463.712179%

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 3933 3933 0 0 0.00% 0.00%
B 3933 3933 440 440 11.19% 11.19%
C 3933 3933 44 44 1.12% 1.12%
D 3933 3933 128 128 3.25% 3.25%

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 88196 963.25 447 437 91.1
A 15 169 84741 925.32 447 437 91.1
A 13 6 8328 86.61 447 437 91.1
B 5 172 1345082 16450.77 411 400 81.7
B 4 81 139461 1701.27 411 400 81.7
B 15 85 42034 509.35 411 400 81.7
C 0 10 342045 3344.34 432 434 102.1
C 15 214 161607 1577.87 432 434 102.1
C 14 67 4435 39.17 432 434 102.1
D 7 80 207438 1905.48 432 418 108.6
D 10 118 172745 1586.15 432 418 108.6
D 10 234 143600 1317.89 432 418 108.6

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