ASTROSAT CZTI

Data Quality Report

Orbit 32987

Creation date: 2024-06-27T20:44:15.895810
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/AS1C07_003T01_9000004754_32987cztM0_level2.evt modeM0/AS1C07_003T01_9000004754_32987cztM0_level2_quad_clean.evt
Size (bytes)408,957,12088,128,000
Size390.0 MB 84.0 MB
Events in quadrant A2,599,243595,753
Events in quadrant B3,141,387601,275
Events in quadrant C2,679,787564,577
Events in quadrant D3,613,028544,511

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109983
B0126582
C0112232
D0141242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5176100.193199%
B51761222.357032%
C51761162.241113%
D51761422.743431%

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 7090 5177 2 2 0.03% 0.04%
B 7090 5177 79 79 1.11% 1.53%
C 7090 5177 69 69 0.97% 1.33%
D 7090 5177 111 111 1.57% 2.14%

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 12 227 66830 510.55 648 638 129.6
A 9 143 21938 164.29 648 638 129.6
A 13 254 8990 64.42 648 638 129.6
B 5 172 475359 3886.52 644 632 122.1
B 0 197 110027 895.6 644 632 122.1
B 12 111 14294 111.85 644 632 122.1
C 0 10 270625 1925.08 606 613 140.3
C 3 233 16308 111.9 606 613 140.3
C 14 67 10979 73.91 606 613 140.3
D 8 195 428181 2691.88 604 594 158.8
D 2 250 340102 2137.38 604 594 158.8
D 12 227 329666 2071.68 604 594 158.8

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