ASTROSAT CZTI

Data Quality Report

Orbit 20160316_T01_051T01_9000000376_level2

Creation date: 2025-10-28T18:13:05.843147
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/AS1T01_051T01_9000000376cztM0_level2.fits modeM0/AS1T01_051T01_9000000376cztM0_level2_quad_clean.evt
Size (bytes)51,523,20032,751,360
Size49.1 MB 31.2 MB
Events in quadrant A302,714151,029
Events in quadrant B296,706155,089
Events in quadrant C299,618149,830
Events in quadrant D242,464115,894

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120860
B0121460
C0121730
D0182760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A599590.150125%
B5995100.166806%
C5995130.216847%
D599561610.275229%

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 6805 5995 0 0 0.00% 0.00%
B 6805 5995 0 0 0.00% 0.00%
C 6805 5994 0 0 0.00% 0.00%
D 6805 5990 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 7 110 299 10.34 78 73 21.9
A 14 188 294 10.11 78 73 21.9
A 0 29 290 9.92 78 73 21.9
B 2 9 252 9.92 78 74 17.9
B 12 226 227 8.53 78 74 17.9
B 14 254 223 8.3 78 74 17.9
C 9 188 218 6.25 79 73 23.2
C 1 65 216 6.16 79 73 23.2
C 1 81 208 5.82 79 73 23.2
D 3 14 222 7.85 68 62 20.4
D 11 82 194 6.48 68 62 20.4
D 7 3 191 6.33 68 62 20.4

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