ASTROSAT CZTI

Data Quality Report

Orbit 37949

Creation date: 2024-06-27T21:46:31.591162
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/AS1A11_082T01_9000005356_37949cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37949cztM0_level2_quad_clean.evt
Size (bytes)1,215,550,080202,331,520
Size1.1 GB 193.0 MB
Events in quadrant A8,550,0591,268,617
Events in quadrant B9,139,1061,271,111
Events in quadrant C7,745,6071,304,463
Events in quadrant D10,329,7391,212,005

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0355095
B0374454
C0327454
D0415994

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155321180.759722%
B155325263.386557%
C15532830.534381%
D155325893.792171%

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 19739 15535 50 50 0.25% 0.32%
B 19739 15535 344 344 1.74% 2.21%
C 19739 15535 54 54 0.27% 0.35%
D 19739 15535 470 470 2.38% 3.03%

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 936175 2686.55 1723 1688 347.8
A 15 222 716924 2056.23 1723 1688 347.8
A 13 248 150718 428.45 1723 1688 347.8
B 5 172 666017 2061.71 1705 1659 322.2
B 5 184 493878 1527.51 1705 1659 322.2
B 0 229 405159 1252.18 1705 1659 322.2
C 15 214 649722 1657.44 1690 1707 391.0
C 0 10 316735 805.75 1690 1707 391.0
C 14 254 140014 353.75 1690 1707 391.0
D 1 52 2439729 6039.19 1660 1616 403.7
D 2 249 589049 1455.07 1660 1616 403.7
D 13 249 200763 493.29 1660 1616 403.7

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