ASTROSAT CZTI

Data Quality Report

Orbit 20171006_C03_013T01_9000001586_level2

Creation date: 2025-11-17T13:41:01.174977
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/AS1C03_013T01_9000001586cztM0_level2.fits modeM0/AS1C03_013T01_9000001586cztM0_level2_quad_clean.evt
Size (bytes)323,372,160207,596,160
Size308.4 MB 198.0 MB
Events in quadrant A2,014,8401,088,309
Events in quadrant B1,878,0601,035,269
Events in quadrant C1,993,7361,040,073
Events in quadrant D1,667,162883,213

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0734870
B0913300
C0671990
D0899640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06640
B06640
C06640
D06640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A325696792.084805%
B3257124237.439133%
C325712520.773694%
D3256823487.209531%

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 39837 32581 0 0 0.00% 0.00%
B 39837 32579 0 0 0.00% 0.00%
C 39837 32585 0 0 0.00% 0.00%
D 39837 32396 0 0 0.00% 0.00%

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 0 29 1914 10.87 526 494 130.6
A 7 110 1644 8.8 526 494 130.6
A 0 30 1528 7.91 526 494 130.6
B 2 9 1624 11.56 496 474 99.5
B 5 128 1229 7.59 496 474 99.5
B 14 254 1220 7.5 496 474 99.5
C 1 80 1380 6.48 526 492 137.0
C 1 81 1360 6.34 526 492 137.0
C 9 188 1347 6.24 526 492 137.0
D 6 231 1189 6.04 476 434 125.1
D 7 3 1183 5.99 476 434 125.1
D 7 5 1179 5.96 476 434 125.1

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