ASTROSAT CZTI

Data Quality Report

Orbit 51178

Creation date: 2025-03-17T09:53:33.787976
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/AS1C07_001T01_9000006454_51178cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51178cztM0_level2_quad_clean.evt
Size (bytes)293,679,36045,129,600
Size280.1 MB 43.0 MB
Events in quadrant A2,938,417284,788
Events in quadrant B2,694,263305,712
Events in quadrant C2,991,615252,814
Events in quadrant D1,983,010282,548

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02162110568
B02040410044
C02743816373
D0182289621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013260
B013352
C013158
D013456

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121
B0122
C0122
D0111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34102587.565982%
B34032788.169262%
C313935111.181905%
D3507872.480753%

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 7680 3945 178 178 2.32% 4.51%
B 7677 3962 119 119 1.55% 3.00%
C 7673 3663 231 231 3.01% 6.31%
D 7669 4049 54 54 0.70% 1.33%

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 12 3 386350 4324.0 353 344 89.3
A 7 206 380734 4261.09 353 344 89.3
A 14 254 163204 1824.34 353 344 89.3
B 5 185 251184 3283.84 353 340 76.4
B 10 60 237726 3107.66 353 340 76.4
B 0 171 118481 1546.6 353 340 76.4
C 4 12 871936 9778.79 313 309 89.1
C 12 247 297229 3331.15 313 309 89.1
C 13 3 243927 2733.15 313 309 89.1
D 2 62 143709 1441.13 351 339 99.5
D 12 191 112807 1130.51 351 339 99.5
D 8 176 80684 807.61 351 339 99.5

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