ASTROSAT CZTI

Data Quality Report

Orbit 29081

Creation date: 2024-06-27T20:00:06.684198
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/AS1A10_115T01_9000004178_29081cztM0_level2.evt modeM0/AS1A10_115T01_9000004178_29081cztM0_level2_quad_clean.evt
Size (bytes)499,155,84096,053,760
Size476.0 MB 91.6 MB
Events in quadrant A3,431,259626,145
Events in quadrant B3,381,455646,487
Events in quadrant C3,314,236617,223
Events in quadrant D4,565,177582,006

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140422
B0138272
C0136002
D0178283

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62671161.850965%
B62671382.202011%
C62671342.138184%
D62661933.080115%

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 7542 6267 5 5 0.07% 0.08%
B 7542 6267 2 2 0.03% 0.03%
C 7542 6267 1 1 0.01% 0.02%
D 7541 6266 153 153 2.03% 2.44%

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 0 13 115319 679.0 845 831 168.6
A 6 16 55801 326.01 845 831 168.6
A 13 254 11310 62.15 845 831 168.6
B 5 255 21214 128.0 846 829 159.3
B 12 111 19032 114.3 846 829 159.3
B 11 111 16881 100.8 846 829 159.3
C 14 238 130210 688.81 806 815 187.9
C 2 16 18201 92.55 806 815 187.9
C 2 114 15245 76.81 806 815 187.9
D 8 195 764219 4024.19 802 783 189.7
D 1 52 694812 3658.34 802 783 189.7
D 12 233 46388 240.39 802 783 189.7

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