ASTROSAT CZTI

Data Quality Report

Orbit 46256

Creation date: 2024-06-27T23:20:54.477511
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/AS1A13_071T10_9000006192_46256cztM0_level2.fits modeM0/AS1A13_071T10_9000006192_46256cztM0_level2_quad_clean.evt
Size (bytes)166,970,88036,910,080
Size159.2 MB 35.2 MB
Events in quadrant A2,094,576240,136
Events in quadrant B1,329,555260,513
Events in quadrant C1,185,218245,503
Events in quadrant D1,409,262222,532

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076301
B053262
C048121
D055131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20601728.349515%
B2059864.176785%
C2059904.371054%
D20591256.070908%

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 3215 2061 3 3 0.09% 0.15%
B 3214 2059 11 11 0.34% 0.53%
C 3214 2059 24 24 0.75% 1.17%
D 3214 2059 39 39 1.21% 1.89%

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 10 83 1073866 19352.28 262 256 55.5
A 13 6 4290 72.71 262 256 55.5
A 13 254 3145 52.08 262 256 55.5
B 3 112 220227 4184.81 261 253 52.6
B 5 172 60543 1146.96 261 253 52.6
B 12 111 6379 116.54 261 253 52.6
C 12 2 156198 2549.08 258 259 61.2
C 1 3 11085 176.97 258 259 61.2
C 11 16 9648 153.48 258 259 61.2
D 1 52 214332 3283.5 257 250 65.2
D 5 235 118495 1813.59 257 250 65.2
D 13 249 46942 716.14 257 250 65.2

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