ASTROSAT CZTI

Data Quality Report

Orbit 58644

Creation date: 2026-07-31T01:05:45.407187
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/AS1A14_004T06_9000006594_58644cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58644cztM0_level2_quad_clean.evt
Size (bytes)147,902,40028,981,440
Size141.1 MB 27.6 MB
Events in quadrant A1,142,619193,609
Events in quadrant B1,154,761198,727
Events in quadrant C1,080,581192,349
Events in quadrant D1,935,571145,681

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093624422
B099535174
C0100155431
D0149387819

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08248
B08242
C08143
D08238

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077
B077
C055
D055

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2108733.462998%
B2017462.280615%
C204960.292826%
D195131916.350589%

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 7144 2427 66 66 0.92% 2.72%
B 6849 2340 37 37 0.54% 1.58%
C 7095 2306 4 4 0.06% 0.17%
D 6917 2220 262 262 3.79% 11.80%

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 17 239751 4102.7 225 219 58.4
A 3 14 17231 291.38 225 219 58.4
A 4 249 9202 153.86 225 219 58.4
B 2 249 149996 3189.27 213 206 47.0
B 5 185 72409 1537.32 213 206 47.0
B 8 234 31436 664.94 213 206 47.0
C 15 217 93333 1515.41 218 215 61.4
C 12 252 49583 803.42 218 215 61.4
C 12 249 31626 511.18 218 215 61.4
D 2 249 651190 11695.82 191 183 55.7
D 11 129 291230 5228.87 191 183 55.7
D 8 240 125792 2256.66 191 183 55.7

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