ASTROSAT CZTI

Data Quality Report

Orbit 20210118_A10_123T03_9000004120_level2

Creation date: 2025-12-19T20:56:55.350134
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/AS1A10_123T03_9000004120cztM0_level2.fits modeM0/AS1A10_123T03_9000004120cztM0_level2_quad_clean.evt
Size (bytes)603,466,560460,028,160
Size575.5 MB 438.7 MB
Events in quadrant A3,773,2762,545,678
Events in quadrant B3,580,1662,569,709
Events in quadrant C3,644,2562,440,164
Events in quadrant D3,142,9562,240,624

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01289490
B01272940
C01310750
D01698520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012300
B012300
C012300
D012300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A602768921.479859%
B602767751.285752%
C6027614912.473621%
D6027634695.755193%

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 69007 60266 0 0 0.00% 0.00%
B 69007 60264 0 0 0.00% 0.00%
C 69007 60250 0 0 0.00% 0.00%
D 69006 60244 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 3544 11.01 983 927 237.7
A 7 110 2930 8.43 983 927 237.7
A 9 19 2766 7.74 983 927 237.7
B 2 9 2956 11.16 947 906 183.7
B 5 232 2386 8.06 947 906 183.7
B 2 8 2377 8.01 947 906 183.7
C 1 80 2793 7.72 963 903 244.9
C 1 81 2735 7.48 963 903 244.9
C 3 187 2486 6.46 963 903 244.9
D 15 46 2402 6.64 899 822 238.0
D 7 3 2291 6.17 899 822 238.0
D 6 67 2238 5.95 899 822 238.0

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