ASTROSAT CZTI

Data Quality Report

Orbit 04977

Creation date: 2024-06-27T14:49:38.427244
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_158T01_9000000630_04977cztM0_level2.evt modeM0/AS1G05_158T01_9000000630_04977cztM0_level2_quad_clean.evt
Size (bytes)470,482,56074,039,040
Size448.7 MB 70.6 MB
Events in quadrant A3,628,622444,549
Events in quadrant B3,350,664461,237
Events in quadrant C3,086,384460,143
Events in quadrant D3,754,049435,161

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147663
B0137742
C0132852
D0151732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63152684.243864%
B6315791.250990%
C6315691.092637%
D63151552.454473%

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 7540 6315 143 143 1.90% 2.26%
B 7540 6315 0 0 0.00% 0.00%
C 7540 6315 1 1 0.01% 0.02%
D 7539 6314 95 95 1.26% 1.50%

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 50 528114 3277.43 798 785 160.9
A 15 234 23655 142.14 798 785 160.9
A 0 226 7955 44.56 798 785 160.9
B 15 204 116538 757.02 813 795 152.9
B 0 219 78471 508.04 813 795 152.9
B 0 183 16249 101.08 813 795 152.9
C 12 4 15137 79.68 784 789 180.1
C 9 54 10872 56.0 784 789 180.1
C 13 61 6304 30.63 784 789 180.1
D 12 233 162598 856.01 780 758 189.1
D 1 7 150864 793.95 780 758 189.1
D 2 136 86056 451.16 780 758 189.1

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