ASTROSAT CZTI

Data Quality Report

Orbit 35670

Creation date: 2022-05-04T05:45:46.708976
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/AS1A09_029T02_9000005106_35670cztM0_level2.evt modeM0/AS1A09_029T02_9000005106_35670cztM0_level2_quad_clean.evt
Size (bytes)424,033,92057,312,000
Size404.4 MB 54.7 MB
Events in quadrant A2,564,879350,114
Events in quadrant B3,946,922347,521
Events in quadrant C3,085,774339,610
Events in quadrant D2,890,636333,121

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108703
B0150852
C0121962
D0120902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A520390.172977%
B52034839.283106%
C52031623.113588%
D52031031.979627%

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 7115 5204 0 0 0.00% 0.00%
B 7115 5204 355 355 4.99% 6.82%
C 7115 5204 131 131 1.84% 2.52%
D 7115 5204 89 89 1.25% 1.71%

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 139505 1144.7 596 584 121.4
A 15 169 79943 653.91 596 584 121.4
A 7 16 29501 238.27 596 584 121.4
B 5 172 1496439 13434.95 575 561 111.3
B 5 255 99206 885.96 575 561 111.3
B 5 31 29763 262.27 575 561 111.3
C 0 10 473274 3559.15 572 577 132.8
C 15 214 214340 1609.52 572 577 132.8
C 9 187 164145 1231.58 572 577 132.8
D 13 249 404666 2839.76 575 558 142.3
D 8 195 84874 592.51 575 558 142.3
D 7 80 56266 391.47 575 558 142.3

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