ASTROSAT CZTI

Data Quality Report

Orbit 11171

Creation date: 2024-06-27T16:09:17.735144
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/AS1A04_042T01_9000001630_11171cztM0_level2.evt modeM0/AS1A04_042T01_9000001630_11171cztM0_level2_quad_clean.evt
Size (bytes)2,576,488,320306,984,960
Size2.4 GB 292.8 MB
Events in quadrant A23,733,1061,789,354
Events in quadrant B17,793,2581,931,223
Events in quadrant C12,106,1041,934,708
Events in quadrant D22,568,3241,770,222

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05628
B05626
C05626
D05626

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0905421609
B071572863
C055794474
D086878844

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27174296310.903805%
B2719512624.640559%
C27219780.286565%
D271959503.493289%

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 31656 27206 1835 1835 5.80% 6.74%
B 31631 27223 647 647 2.05% 2.38%
C 31649 27253 0 0 0.00% 0.00%
D 31630 27230 953 953 3.01% 3.50%

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 14 238 4904417 8004.13 3034 2969 612.4
A 8 5 3678257 6001.8 3034 2969 612.4
A 8 15 3206809 5231.92 3034 2969 612.4
B 4 239 2853449 4773.62 3154 3074 597.1
B 10 16 929555 1551.61 3154 3074 597.1
B 11 51 389133 646.55 3154 3074 597.1
C 9 204 38051 48.71 3087 3103 717.5
C 13 61 23356 28.23 3087 3103 717.5
C 14 234 14231 15.51 3087 3103 717.5
D 10 157 8087606 11019.99 3032 2944 733.6
D 1 52 567820 769.97 3032 2944 733.6
D 2 14 520543 705.53 3032 2944 733.6

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