ASTROSAT CZTI

Data Quality Report

Orbit 14805

Creation date: 2024-06-27T16:59:53.949522
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_022T02_9000002184_14805cztM0_level2.evt modeM0/AS1A04_022T02_9000002184_14805cztM0_level2_quad_clean.evt
Size (bytes)1,280,217,600202,124,160
Size1.2 GB 192.8 MB
Events in quadrant A7,672,5891,308,124
Events in quadrant B13,586,1731,191,295
Events in quadrant C8,913,0911,284,823
Events in quadrant D7,541,3621,255,871

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0328014
B0505563
C0362483
D0333683

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156661160.740457%
B15666238915.249585%
C156661230.785140%
D156661380.880889%

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 18992 15670 13 13 0.07% 0.08%
B 18992 15669 1941 1941 10.22% 12.39%
C 18992 15670 40 40 0.21% 0.26%
D 18992 15670 67 67 0.35% 0.43%

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 12 189 242080 633.69 1899 1862 379.1
A 4 2 84383 217.69 1899 1862 379.1
A 15 223 21561 51.97 1899 1862 379.1
B 10 16 6386776 19727.8 1730 1693 323.7
B 3 64 109084 331.8 1730 1693 323.7
B 0 219 77012 232.71 1730 1693 323.7
C 3 233 1608371 3893.09 1806 1815 412.7
C 0 207 223737 537.77 1806 1815 412.7
C 8 128 16571 35.76 1806 1815 412.7
D 7 254 125471 285.15 1823 1775 433.8
D 15 0 121341 275.63 1823 1775 433.8
D 12 110 84546 190.81 1823 1775 433.8

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