ASTROSAT CZTI

Data Quality Report

Orbit 24710

Creation date: 2024-06-27T19:09:02.052401
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/AS1T03_194T01_9000003620_24710cztM0_level2.evt modeM0/AS1T03_194T01_9000003620_24710cztM0_level2_quad_clean.evt
Size (bytes)658,604,160106,672,320
Size628.1 MB 101.7 MB
Events in quadrant A4,283,407714,619
Events in quadrant B3,622,472720,443
Events in quadrant C6,818,024658,923
Events in quadrant D4,769,371669,350

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167822
B0149192
C0251272
D0186643

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67042443.639618%
B67041482.207637%
C67044126.145585%
D67031742.595853%

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 7849 6704 140 140 1.78% 2.09%
B 7849 6704 4 4 0.05% 0.06%
C 7849 6704 5 5 0.06% 0.07%
D 7848 6703 83 83 1.06% 1.24%

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 3 1 757605 4167.01 913 895 181.6
A 13 254 10296 51.77 913 895 181.6
A 10 255 9784 48.95 913 895 181.6
B 0 230 99609 581.68 893 873 169.7
B 3 64 20729 116.98 893 873 169.7
B 12 111 20317 114.55 893 873 169.7
C 7 247 3229173 16398.04 852 858 196.9
C 14 238 135101 681.88 852 858 196.9
C 2 16 93100 468.54 852 858 196.9
D 1 52 1061000 4955.51 888 864 213.9
D 12 233 211776 985.89 888 864 213.9
D 8 195 135424 628.99 888 864 213.9

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