ASTROSAT CZTI

Data Quality Report

Orbit 36023

Creation date: 2022-08-09T20:31:23.637920
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_069T01_9000005158_36023cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36023cztM0_level2_quad_clean.evt
Size (bytes)1,428,013,440180,558,720
Size1.3 GB 172.2 MB
Events in quadrant A7,432,4281,170,477
Events in quadrant B12,371,0461,048,240
Events in quadrant C9,108,0831,116,109
Events in quadrant D13,281,7861,053,187

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0322595
B0469084
C0371244
D0502964

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15640180.115090%
B15640170410.895141%
C156403782.416880%
D156408975.735294%

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 19818 15643 1 1 0.01% 0.01%
B 19818 15643 1317 1317 6.65% 8.42%
C 19818 15643 285 285 1.44% 1.82%
D 19818 15643 950 950 4.79% 6.07%

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 10 83 427733 1170.79 1801 1764 363.8
A 13 254 25308 64.71 1801 1764 363.8
A 3 137 19064 47.55 1801 1764 363.8
B 5 172 4305835 13250.99 1706 1665 324.8
B 5 255 389363 1193.58 1706 1665 324.8
B 0 190 301254 922.33 1706 1665 324.8
C 9 187 1376848 3461.75 1715 1726 397.2
C 15 214 642967 1614.27 1715 1726 397.2
C 0 10 280463 701.7 1715 1726 397.2
D 12 227 3018459 7202.79 1711 1662 418.8
D 12 235 1599350 3814.58 1711 1662 418.8
D 12 17 420704 1000.49 1711 1662 418.8

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