ASTROSAT CZTI

Data Quality Report

Orbit 25071

Creation date: 2024-06-27T19:13:29.025260
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/AS1T03_206T01_9000003672_25071cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25071cztM0_level2_quad_clean.evt
Size (bytes)502,859,52081,092,160
Size479.6 MB 77.3 MB
Events in quadrant A3,127,396525,066
Events in quadrant B3,322,969542,626
Events in quadrant C3,212,081496,376
Events in quadrant D5,155,962468,302

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127872
B0133272
C0130262
D0197012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6059260.429114%
B6058821.353582%
C6058721.188511%
D60581372.261472%

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 7419 6060 0 0 0.00% 0.00%
B 7418 6059 12 12 0.16% 0.20%
C 7418 6059 0 0 0.00% 0.00%
D 7418 6059 67 67 0.90% 1.11%

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 13 254 10376 59.63 811 796 160.7
A 0 226 7058 38.97 811 796 160.7
A 3 137 6801 37.37 811 796 160.7
B 0 229 44801 287.8 817 801 152.9
B 5 172 40176 257.54 817 801 152.9
B 0 190 32454 207.04 817 801 152.9
C 14 238 123595 685.23 769 774 179.2
C 3 233 36413 198.83 769 774 179.2
C 7 247 28741 156.03 769 774 179.2
D 1 52 1014593 5506.61 763 742 184.1
D 8 195 808206 4385.64 763 742 184.1
D 9 35 158416 856.39 763 742 184.1

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