ASTROSAT CZTI

Data Quality Report

Orbit 31739

Creation date: 2024-06-27T20:32:08.453702
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/AS1T04_034T01_9000004632_31739cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31739cztM0_level2_quad_clean.evt
Size (bytes)2,945,321,280358,441,920
Size2.7 GB 341.8 MB
Events in quadrant A22,614,0172,187,558
Events in quadrant B28,090,0092,249,639
Events in quadrant C17,634,2702,193,019
Events in quadrant D18,871,1802,187,868

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06060
B06060
C06060
D06060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0861715
B01049255
C0709475
D0759905

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2962628739.697563%
B2962724888.397745%
C2962711103.746583%
D296273421.154352%

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 32856 29631 2001 2001 6.09% 6.75%
B 32857 29632 1083 1083 3.30% 3.65%
C 32857 29632 413 413 1.26% 1.39%
D 32857 29632 144 144 0.44% 0.49%

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 0 13 9042710 12886.12 3513 3443 701.5
A 13 254 49691 65.93 3513 3443 701.5
A 3 137 36340 46.9 3513 3443 701.5
B 6 159 7748948 11463.11 3513 3418 675.7
B 5 255 3894829 5759.15 3513 3418 675.7
B 4 80 2194393 3242.57 3513 3418 675.7
C 0 10 3054272 3757.4 3457 3474 811.9
C 14 238 558105 683.09 3457 3474 811.9
C 14 225 209742 254.04 3457 3474 811.9
D 8 195 4595500 5521.97 3528 3439 831.6
D 12 233 682891 817.04 3528 3439 831.6
D 2 250 160967 189.43 3528 3439 831.6

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