ASTROSAT CZTI

Data Quality Report

Orbit 35493

Creation date: 2024-06-27T21:14:13.925133
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/AS1A11_097T22_9000005082_35493cztM0_level2.evt modeM0/AS1A11_097T22_9000005082_35493cztM0_level2_quad_clean.evt
Size (bytes)422,415,36083,689,920
Size402.8 MB 79.8 MB
Events in quadrant A2,722,763531,586
Events in quadrant B3,454,158562,047
Events in quadrant C3,406,629561,851
Events in quadrant D2,868,487527,179

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110533
B0134552
C0132352
D0117132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5016350.697767%
B50163777.515949%
C50162164.306220%
D5016661.315789%

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 7108 5017 25 25 0.35% 0.50%
B 7108 5017 278 278 3.91% 5.54%
C 7108 5017 151 151 2.12% 3.01%
D 7108 5017 56 56 0.79% 1.12%

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 15 169 263886 2195.68 600 590 119.9
A 10 83 127099 1054.99 600 590 119.9
A 9 143 7753 59.73 600 590 119.9
B 5 172 852006 7883.57 586 573 108.0
B 5 236 248110 2291.99 586 573 108.0
B 4 232 23800 215.06 586 573 108.0
C 0 10 464516 3391.98 597 603 136.8
C 15 214 207798 1514.94 597 603 136.8
C 1 23 194537 1417.98 597 603 136.8
D 7 80 235874 1682.9 587 572 139.8
D 8 195 151704 1080.91 587 572 139.8
D 13 249 126471 900.44 587 572 139.8

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