ASTROSAT CZTI

Data Quality Report

Orbit 20240222_A13_041T15_9000006086_level2

Creation date: 2024-02-27T13:29:55.043215
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/AS1A13_041T15_9000006086cztM0_level2.fits modeM0/AS1A13_041T15_9000006086cztM0_level2_quad_clean.evt
Size (bytes)293,512,320310,777,920
Size279.9 MB 296.4 MB
Events in quadrant A1,706,8521,819,804
Events in quadrant B1,672,2001,854,547
Events in quadrant C1,743,4861,831,061
Events in quadrant D1,463,2361,604,149

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01057000
B0748740
C0733990
D0899850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06780
B06780
C06780
D06760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A334829392.804492%
B335148502.536254%
C335115131.530841%
D3348414514.333413%

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 35482 33550 0 0 0.00% 0.00%
B 35482 33552 0 0 0.00% 0.00%
C 35483 33560 0 0 0.00% 0.00%
D 35482 33523 0 0 0.00% 0.00%

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 7 110 1423 8.73 444 414 115.5
A 15 236 1350 8.1 444 414 115.5
A 0 29 1300 7.66 444 414 115.5
B 2 9 1589 13.0 442 420 89.9
B 2 8 1278 9.55 442 420 89.9
B 3 17 1198 8.66 442 420 89.9
C 1 81 1377 7.93 460 425 120.1
C 3 202 1319 7.44 460 425 120.1
C 1 80 1281 7.13 460 425 120.1
D 12 6 1112 6.17 420 380 118.7
D 10 189 1107 6.12 420 380 118.7
D 1 31 1065 5.77 420 380 118.7

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