ASTROSAT CZTI

Data Quality Report

Orbit 20210510_A10_053T17_9000004366_level2

Creation date: 2025-12-25T11:14:14.884860
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_053T17_9000004366cztM0_level2.fits modeM0/AS1A10_053T17_9000004366cztM0_level2_quad_clean.evt
Size (bytes)528,318,720350,242,560
Size503.8 MB 334.0 MB
Events in quadrant A3,332,2281,877,937
Events in quadrant B3,162,2701,881,346
Events in quadrant C3,175,0921,719,828
Events in quadrant D2,869,0601,663,429

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01124560
B01528930
C01364760
D01107890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010300
B010300
C010300
D010300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5043610482.077881%
B504369481.879610%
C5043624204.798160%
D504366141.217384%

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 60862 50417 0 0 0.00% 0.00%
B 60862 50425 0 0 0.00% 0.00%
C 60862 50426 0 0 0.00% 0.00%
D 60862 50427 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 2755 9.17 869 821 211.0
A 7 110 2583 8.35 869 821 211.0
A 9 19 2471 7.82 869 821 211.0
B 2 9 2477 10.1 837 803 165.8
B 5 128 2143 8.08 837 803 165.8
B 3 17 2111 7.89 837 803 165.8
C 12 241 2161 6.51 839 791 210.5
C 3 187 2156 6.48 839 791 210.5
C 3 126 2117 6.3 839 791 210.5
D 15 46 2242 6.9 819 748 216.7
D 3 14 2015 5.85 819 748 216.7
D 6 67 2013 5.84 819 748 216.7

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