ASTROSAT CZTI

Data Quality Report

Orbit 20190423_T03_099T03_9000002854_level2

Creation date: 2025-11-29T13:28:15.329117
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/AS1T03_099T03_9000002854cztM0_level2.fits modeM0/AS1T03_099T03_9000002854cztM0_level2_quad_clean.evt
Size (bytes)467,881,920418,250,880
Size446.2 MB 398.9 MB
Events in quadrant A2,946,2142,502,887
Events in quadrant B2,803,8022,490,523
Events in quadrant C2,814,4562,361,080
Events in quadrant D2,343,0662,050,345

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09700
B09700
C09700
D09700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0996420
B01015100
C0990510
D01460250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A475055001.052521%
B475056741.418798%
C475056591.387222%
D47505487010.251552%

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 57220 47497 0 0 0.00% 0.00%
B 57220 47497 0 0 0.00% 0.00%
C 57220 47500 0 0 0.00% 0.00%
D 57220 47250 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 2781 10.76 768 725 191.0
A 7 110 2309 8.29 768 725 191.0
A 9 19 2171 7.57 768 725 191.0
B 2 9 2275 10.83 741 710 144.6
B 2 8 1864 7.98 741 710 144.6
B 3 17 1839 7.81 741 710 144.6
C 1 80 2144 7.66 743 698 188.8
C 1 81 2129 7.58 743 698 188.8
C 3 126 1941 6.58 743 698 188.8
D 10 190 1761 6.47 669 611 177.7
D 7 3 1691 6.08 669 611 177.7
D 6 231 1674 5.98 669 611 177.7

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