ASTROSAT CZTI

Data Quality Report

Orbit 37270

Creation date: 2024-06-27T21:37:42.595391
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_103T03_9000005296_37270cztM0_level2.evt modeM0/AS1A10_103T03_9000005296_37270cztM0_level2_quad_clean.evt
Size (bytes)471,525,12079,951,680
Size449.7 MB 76.2 MB
Events in quadrant A3,025,688516,645
Events in quadrant B3,798,142505,088
Events in quadrant C3,683,909511,857
Events in quadrant D3,379,242482,547

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127493
B0151052
C0144132
D0142342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5789380.656417%
B57892814.854034%
C57891743.005700%
D57892223.834859%

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 9073 5791 23 23 0.25% 0.40%
B 9073 5791 188 188 2.07% 3.25%
C 9073 5791 160 160 1.76% 2.76%
D 9073 5791 155 155 1.71% 2.68%

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 281576 2138.74 654 643 131.4
A 15 237 79490 600.26 654 643 131.4
A 13 248 61763 465.31 654 643 131.4
B 5 184 890855 7362.1 642 626 120.9
B 5 172 150165 1236.67 642 626 120.9
B 0 213 98318 807.9 642 626 120.9
C 14 254 392932 2672.83 634 638 146.8
C 1 23 331344 2253.21 634 638 146.8
C 15 214 241273 1639.53 634 638 146.8
D 13 249 303192 1981.85 632 615 152.7
D 2 249 256765 1677.75 632 615 152.7
D 12 218 111654 727.29 632 615 152.7

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