ASTROSAT CZTI

Data Quality Report

Orbit 20170328_G06_033T01_9000001116_level2

Creation date: 2025-11-10T08:51:04.527642
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/AS1G06_033T01_9000001116cztM0_level2.fits modeM0/AS1G06_033T01_9000001116cztM0_level2_quad_clean.evt
Size (bytes)614,877,120594,518,400
Size586.4 MB 567.0 MB
Events in quadrant A3,733,2583,538,242
Events in quadrant B3,598,9423,532,827
Events in quadrant C3,741,6273,460,002
Events in quadrant D3,225,3323,152,008

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01200
C01200
D01300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012820
B012760
C012860
D012820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01376680
B01350370
C01308510
D01457830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A630219141.450310%
B6301710101.602742%
C630105390.855420%
D6304611451.816134%

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 93049 63186 0 0 0.00% 0.00%
B 93049 63183 0 0 0.00% 0.00%
C 93049 63178 0 0 0.00% 0.00%
D 93049 63211 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 3552 10.92 968 904 242.5
A 7 110 3018 8.72 968 904 242.5
A 9 19 2804 7.84 968 904 242.5
B 2 9 3157 11.81 949 903 190.9
B 2 8 2416 7.93 949 903 190.9
B 5 128 2405 7.87 949 903 190.9
C 1 80 2699 6.85 987 916 260.1
C 1 81 2660 6.7 987 916 260.1
C 12 241 2496 6.07 987 916 260.1
D 6 231 2357 6.19 920 837 245.7
D 11 82 2305 5.98 920 837 245.7
D 7 5 2285 5.89 920 837 245.7

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