ASTROSAT CZTI

Data Quality Report

Orbit 03879

Creation date: 2024-06-27T14:34:42.532764
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/AS1G05_083T01_9000000494_03879cztM0_level2.evt modeM0/AS1G05_083T01_9000000494_03879cztM0_level2_quad_clean.evt
Size (bytes)442,261,44081,377,280
Size421.8 MB 77.6 MB
Events in quadrant A3,284,262506,460
Events in quadrant B3,331,289512,375
Events in quadrant C3,108,743504,490
Events in quadrant D3,221,658481,544

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142463
B0142012
C0137072
D0144222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65861111.685393%
B65861442.186456%
C6586681.032493%
D6586901.366535%

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 9186 6586 13 13 0.14% 0.20%
B 9186 6586 9 9 0.10% 0.14%
C 9186 6587 0 0 0.00% 0.00%
D 9186 6587 45 45 0.49% 0.68%

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 0 118 130195 817.3 781 763 158.4
A 0 50 54230 337.62 781 763 158.4
A 8 15 35897 221.85 781 763 158.4
B 15 204 182165 1215.01 793 776 149.3
B 4 81 34149 223.54 793 776 149.3
B 15 54 27781 180.89 793 776 149.3
C 2 53 142126 813.82 756 761 173.7
C 13 61 6539 33.26 756 761 173.7
C 14 67 4428 21.11 756 761 173.7
D 1 84 133791 735.61 750 725 180.9
D 14 34 127317 699.82 750 725 180.9
D 13 248 32599 176.2 750 725 180.9

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