ASTROSAT CZTI

Data Quality Report

Orbit 33963

Creation date: 2024-06-27T20:54:43.066842
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/AS1A11_034T02_9000004856_33963cztM0_level2.evt modeM0/AS1A11_034T02_9000004856_33963cztM0_level2_quad_clean.evt
Size (bytes)267,073,92027,463,680
Size254.7 MB 26.2 MB
Events in quadrant A1,903,923160,945
Events in quadrant B1,944,030160,976
Events in quadrant C1,580,750160,190
Events in quadrant D2,468,715149,192

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074712
B075711
C062281
D092261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2786602.153625%
B27861415.061019%
C2786451.615219%
D27862288.183776%

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 4249 2787 20 20 0.47% 0.72%
B 4249 2787 75 75 1.77% 2.69%
C 4249 2787 35 35 0.82% 1.26%
D 4249 2787 168 168 3.95% 6.03%

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 15 169 596661 8730.28 334 327 68.3
A 13 6 9984 141.38 334 327 68.3
A 10 83 7752 108.7 334 327 68.3
B 5 172 421905 6422.07 331 324 65.6
B 4 251 178157 2708.98 331 324 65.6
B 3 112 15855 236.59 331 324 65.6
C 0 10 141975 1854.77 326 329 76.4
C 15 214 120567 1574.45 326 329 76.4
C 3 233 30860 399.79 326 329 76.4
D 13 249 285540 3570.94 315 306 79.9
D 2 250 256895 3212.33 315 306 79.9
D 8 195 252859 3161.8 315 306 79.9

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