ASTROSAT CZTI

Data Quality Report

Orbit 36453

Creation date: 2022-07-19T05:25:28.896146
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_009T01_9000005200_36453cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36453cztM0_level2_quad_clean.evt
Size (bytes)407,960,64094,492,800
Size389.1 MB 90.1 MB
Events in quadrant A2,663,523631,068
Events in quadrant B3,346,653624,667
Events in quadrant C2,928,594618,383
Events in quadrant D3,034,279594,690

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116373
B0137092
C0120682
D0129972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5626130.231070%
B56261322.346250%
C5626681.208674%
D5626921.635265%

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 7149 5627 0 0 0.00% 0.00%
B 7149 5627 69 69 0.97% 1.23%
C 7149 5627 46 46 0.64% 0.82%
D 7149 5627 80 80 1.12% 1.42%

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 10 83 197381 1542.71 629 615 127.5
A 13 254 9585 70.33 629 615 127.5
A 13 6 7759 56.01 629 615 127.5
B 5 255 352543 2974.71 619 602 118.3
B 5 172 351616 2966.87 619 602 118.3
B 0 190 58404 488.56 619 602 118.3
C 15 214 258927 1822.26 611 614 141.8
C 0 10 229322 1613.42 611 614 141.8
C 15 159 20330 139.08 611 614 141.8
D 13 171 146667 996.22 609 593 146.6
D 13 249 103350 700.8 609 593 146.6
D 10 118 89089 603.54 609 593 146.6

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