ASTROSAT CZTI

Data Quality Report

Orbit 37627

Creation date: 2024-06-27T21:42:23.336019
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_075T01_9000005342_37627cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37627cztM0_level2_quad_clean.evt
Size (bytes)659,332,80083,736,000
Size628.8 MB 79.9 MB
Events in quadrant A7,222,372512,886
Events in quadrant B3,346,214547,460
Events in quadrant C3,198,944551,736
Events in quadrant D5,766,085474,897

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257043
B0143462
C0134472
D0216942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A641997015.111388%
B6419931.448824%
C6419200.311575%
D641984313.132887%

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 9254 6421 926 926 10.01% 14.42%
B 9254 6419 53 53 0.57% 0.83%
C 9254 6419 15 15 0.16% 0.23%
D 9254 6419 767 767 8.29% 11.95%

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 15 222 4099336 28573.84 705 689 143.4
A 10 83 347725 2419.37 705 689 143.4
A 9 143 19725 132.71 705 689 143.4
B 5 172 222324 1591.74 724 704 139.2
B 15 85 83392 593.89 724 704 139.2
B 0 213 39681 279.94 724 704 139.2
C 15 214 295193 1776.25 714 717 165.8
C 0 10 87017 520.55 714 717 165.8
C 14 254 18158 105.2 714 717 165.8
D 12 233 1073406 6630.65 667 649 161.8
D 12 227 861589 5321.42 667 649 161.8
D 2 249 631943 3901.99 667 649 161.8

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