ASTROSAT CZTI

Data Quality Report

Orbit 20220608_T05_009T02_9000005172_level2

Creation date: 2026-01-03T05:17:43.866428
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/AS1T05_009T02_9000005172cztM0_level2.fits modeM0/AS1T05_009T02_9000005172cztM0_level2_quad_clean.evt
Size (bytes)51,756,48043,873,920
Size49.4 MB 41.8 MB
Events in quadrant A318,744252,841
Events in quadrant B308,150256,814
Events in quadrant C314,534243,810
Events in quadrant D262,076210,244

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116500
B0116110
C0128730
D0152270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5195200.384986%
B5195551.058710%
C51951452.791145%
D51953837.372474%

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 7228 5195 0 0 0.00% 0.00%
B 7228 5195 0 0 0.00% 0.00%
C 7228 5189 0 0 0.00% 0.00%
D 7228 5187 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 9 19 269 8.51 83 79 22.3
A 14 95 261 8.15 83 79 22.3
A 7 110 245 7.43 83 79 22.3
B 3 80 258 9.92 81 78 18.1
B 2 9 248 9.37 81 78 18.1
B 2 8 221 7.88 81 78 18.1
C 12 242 229 6.48 83 79 23.2
C 3 187 223 6.22 83 79 23.2
C 3 202 214 5.83 83 79 23.2
D 6 83 205 6.23 75 68 22.0
D 10 189 202 6.09 75 68 22.0
D 10 63 194 5.73 75 68 22.0

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