ASTROSAT CZTI

Data Quality Report

Orbit 51969

Creation date: 2025-05-08T00:02:51.452340
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/AS1C09_011T06_9000006468_51969cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51969cztM0_level2_quad_clean.evt
Size (bytes)2,097,008,640196,130,880
Size2.0 GB 187.0 MB
Events in quadrant A13,970,0111,378,688
Events in quadrant B11,546,4741,537,072
Events in quadrant C23,944,125950,467
Events in quadrant D26,898,249935,381

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0525553
B0455733
C0825143
D0914293

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1645216089.773888%
B1645211046.710430%
C16452602136.597374%
D16452553433.637248%

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 18067 16455 1056 1056 5.84% 6.42%
B 18067 16455 599 599 3.32% 3.64%
C 18067 16454 4545 4545 25.16% 27.62%
D 18067 16454 5284 5284 29.25% 32.11%

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 7 64 4252861 10232.78 1687 1650 415.5
A 7 206 604676 1451.5 1687 1650 415.5
A 8 62 443633 1063.87 1687 1650 415.5
B 12 32 1055366 2934.18 1688 1624 359.1
B 5 185 818935 2275.83 1688 1624 359.1
B 5 172 507378 1408.29 1688 1624 359.1
C 15 224 13953558 35535.48 1413 1398 392.6
C 13 3 1253828 3189.88 1413 1398 392.6
C 0 193 1175771 2991.07 1413 1398 392.6
D 6 42 11768203 28043.3 1489 1426 419.6
D 3 12 1641169 3907.93 1489 1426 419.6
D 7 126 1441346 3431.7 1489 1426 419.6

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