ASTROSAT CZTI

Data Quality Report

Orbit 27743

Creation date: 2024-06-27T19:43:47.531905
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/AS1A09_038T45_9000003998_27743cztM0_level2.evt modeM0/AS1A09_038T45_9000003998_27743cztM0_level2_quad_clean.evt
Size (bytes)363,864,96090,472,320
Size347.0 MB 86.3 MB
Events in quadrant A2,234,803613,258
Events in quadrant B2,382,136620,868
Events in quadrant C2,596,328591,730
Events in quadrant D3,469,250566,813

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100260
B0102730
C0107510
D0137090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4945370.748231%
B4945490.990900%
C4946761.536595%
D49463767.602103%

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 4944 4944 2 2 0.04% 0.04%
B 4944 4944 4 4 0.08% 0.08%
C 4945 4945 7 7 0.14% 0.14%
D 4945 4945 338 338 6.84% 6.84%

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 0 13 27297 229.4 570 557 116.6
A 13 254 8655 69.47 570 557 116.6
A 13 248 5562 42.94 570 557 116.6
B 0 190 58202 532.11 568 553 108.3
B 3 64 32677 296.51 568 553 108.3
B 0 230 27161 245.59 568 553 108.3
C 3 233 372827 2889.04 544 547 128.9
C 14 238 86823 669.54 544 547 128.9
C 0 207 9415 68.82 544 547 128.9
D 1 52 1256392 9753.58 533 516 128.8
D 2 250 140429 1086.61 533 516 128.8
D 2 234 22928 174.06 533 516 128.8

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