ASTROSAT CZTI

Data Quality Report

Orbit 30916

Creation date: 2024-06-27T20:21:08.441560
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/AS1C06_007T01_9000004470_30916cztM0_level2.evt modeM0/AS1C06_007T01_9000004470_30916cztM0_level2_quad_clean.evt
Size (bytes)580,429,44087,264,000
Size553.5 MB 83.2 MB
Events in quadrant A3,315,297578,061
Events in quadrant B5,589,100583,296
Events in quadrant C3,312,531536,828
Events in quadrant D4,951,287520,806

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138541
B0207151
C0137091
D0189701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60661262.077151%
B60671011.664744%
C60674928.109445%
D60672604.285479%

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 7246 6067 91 91 1.26% 1.50%
B 7247 6068 29 29 0.40% 0.48%
C 7247 6068 9 9 0.12% 0.15%
D 7247 6068 222 222 3.06% 3.66%

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 430201 2858.24 745 729 150.3
A 13 254 12046 75.32 745 729 150.3
A 3 137 6935 41.3 745 729 150.3
B 6 159 1939267 13658.44 749 731 141.9
B 6 36 454843 3199.56 749 731 141.9
B 0 183 140297 983.35 749 731 141.9
C 14 238 229546 1389.94 703 707 164.6
C 14 254 169019 1022.31 703 707 164.6
C 0 10 98173 592.0 703 707 164.6
D 12 218 930891 5460.21 710 692 170.4
D 8 195 813350 4770.25 710 692 170.4
D 2 250 119611 698.05 710 692 170.4

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