ASTROSAT CZTI

Data Quality Report

Orbit 41478

Creation date: 2024-06-27T22:29:37.871371
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/AS1A12_035T02_9000005676_41478cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41478cztM0_level2_quad_clean.evt
Size (bytes)159,503,04035,213,760
Size152.1 MB 33.6 MB
Events in quadrant A1,235,435240,311
Events in quadrant B1,122,507243,857
Events in quadrant C1,575,619216,240
Events in quadrant D1,801,597210,804

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048742
B047751
C059321
D068351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A214670.326188%
B2146150.698975%
C21461768.201305%
D21461265.871389%

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 3819 2147 2 2 0.05% 0.09%
B 3819 2147 8 8 0.21% 0.37%
C 3819 2147 164 164 4.29% 7.64%
D 3819 2147 107 107 2.80% 4.98%

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 261659 4978.88 246 240 52.5
A 2 79 11863 221.36 246 240 52.5
A 13 248 5104 92.63 246 240 52.5
B 5 255 70180 1427.63 244 239 49.0
B 0 190 39088 792.98 244 239 49.0
B 15 85 22420 452.76 244 239 49.0
C 0 10 293700 5381.68 228 230 54.5
C 4 254 276184 5060.47 228 230 54.5
C 15 214 92628 1694.4 228 230 54.5
D 5 222 221364 3827.56 233 226 57.8
D 12 16 172137 2975.51 233 226 57.8
D 6 239 170944 2954.86 233 226 57.8

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