ASTROSAT CZTI

Data Quality Report

Orbit 09856

Creation date: 2024-06-27T15:51:29.718582
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/AS1A03_117T06_9000001404_09856cztM0_level2.evt modeM0/AS1A03_117T06_9000001404_09856cztM0_level2_quad_clean.evt
Size (bytes)598,849,920100,592,640
Size571.1 MB 95.9 MB
Events in quadrant A4,117,578619,859
Events in quadrant B4,317,480640,505
Events in quadrant C4,863,982604,571
Events in quadrant D4,253,699584,783

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261
B0260
C0262
D0262

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191391363
B0197031451
C0217371528
D0201431593

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018810
B01884
C018814
D018814

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8600770.895349%
B85781061.235719%
C85692562.987513%
D8570901.050175%

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 11811 8964 0 0 0.00% 0.00%
B 11811 8947 17 17 0.14% 0.19%
C 11811 8968 132 132 1.12% 1.47%
D 11811 8957 30 30 0.25% 0.33%

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 4 2 10269 43.03 1064 1044 214.4
A 0 226 9790 40.79 1064 1044 214.4
A 12 194 8449 34.54 1064 1044 214.4
B 4 81 165068 816.53 1068 1046 200.9
B 12 111 23817 113.36 1068 1046 200.9
B 11 111 19255 90.65 1068 1046 200.9
C 4 254 879519 3729.59 1018 1028 235.5
C 13 61 7658 28.15 1018 1028 235.5
C 14 67 6297 22.37 1018 1028 235.5
D 12 233 127391 486.07 1009 989 260.0
D 1 52 114017 434.65 1009 989 260.0
D 2 16 74755 283.66 1009 989 260.0

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