ASTROSAT CZTI

Data Quality Report

Orbit 13326

Creation date: 2024-06-27T16:39:10.548948
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_101T01_9000001984_13326cztM0_level2.evt modeM0/AS1A04_101T01_9000001984_13326cztM0_level2_quad_clean.evt
Size (bytes)1,662,655,680259,191,360
Size1.5 GB 247.2 MB
Events in quadrant A11,227,6921,570,941
Events in quadrant B11,999,8661,611,323
Events in quadrant C11,110,0841,579,356
Events in quadrant D14,451,5621,493,980

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04720
D04720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04826111
B0502849
C04827710
D0581337

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A231603181.373057%
B231604762.055268%
C231592591.118356%
D231617293.147532%

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 37603 23167 2 2 0.01% 0.01%
B 37603 23167 99 99 0.26% 0.43%
C 37603 23167 38 38 0.10% 0.16%
D 37603 23168 342 342 0.91% 1.48%

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 8 15 142814 244.0 2833 2767 574.0
A 1 162 94992 160.68 2833 2767 574.0
A 1 178 34879 55.95 2833 2767 574.0
B 3 64 285686 524.55 2837 2769 539.3
B 4 142 186473 340.6 2837 2769 539.3
B 10 245 143286 260.53 2837 2769 539.3
C 15 208 252295 390.6 2759 2769 638.8
C 6 96 46665 68.71 2759 2769 638.8
C 3 233 46228 68.03 2759 2769 638.8
D 1 52 2733632 4186.55 2725 2644 652.3
D 8 195 909665 1390.44 2725 2644 652.3
D 2 136 145714 219.32 2725 2644 652.3

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