ASTROSAT CZTI

Data Quality Report

Orbit 24634

Creation date: 2024-06-27T19:08:09.720707
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/AS1C05_012T06_9000003616_24634cztM0_level2.evt modeM0/AS1C05_012T06_9000003616_24634cztM0_level2_quad_clean.evt
Size (bytes)707,840,640121,766,400
Size675.0 MB 116.1 MB
Events in quadrant A3,169,560868,674
Events in quadrant B3,311,703870,294
Events in quadrant C9,512,506738,932
Events in quadrant D5,024,200775,914

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132871
B0137361
C0326281
D0189511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6212460.740502%
B6212550.885383%
C6212186229.974243%
D62135879.447932%

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 7462 6212 0 0 0.00% 0.00%
B 7462 6213 5 5 0.07% 0.08%
C 7462 6212 1287 1287 17.25% 20.72%
D 7463 6214 513 513 6.87% 8.26%

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 13 254 10098 57.46 821 809 161.7
A 0 226 7121 39.04 821 809 161.7
A 3 137 6919 37.79 821 809 161.7
B 0 189 35403 233.37 802 784 148.3
B 0 230 34304 225.96 802 784 148.3
B 5 172 30570 200.79 802 784 148.3
C 7 247 6123694 36782.76 729 736 166.5
C 2 16 196902 1178.44 729 736 166.5
C 0 79 152915 914.19 729 736 166.5
D 7 238 1256208 6864.7 764 743 182.9
D 1 52 408973 2232.14 764 743 182.9
D 8 195 334045 1822.45 764 743 182.9

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