ASTROSAT CZTI

Data Quality Report

Orbit 23806

Creation date: 2024-06-27T18:58:56.605509
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/AS1A07_113T01_9000003526_23806cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23806cztM0_level2_quad_clean.evt
Size (bytes)750,715,20075,732,480
Size715.9 MB 72.2 MB
Events in quadrant A3,231,451489,361
Events in quadrant B3,427,016499,206
Events in quadrant C3,332,562485,291
Events in quadrant D12,302,406362,470

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136311
B0141161
C0138691
D0410331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6540570.871560%
B6541701.070173%
C6541951.452377%
D6540329750.412844%

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 7565 6540 0 0 0.00% 0.00%
B 7566 6541 8 8 0.11% 0.12%
C 7566 6541 7 7 0.09% 0.11%
D 7565 6540 3144 3144 41.56% 48.07%

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 11092 60.73 837 819 169.2
A 0 226 7104 37.16 837 819 169.2
A 3 137 7077 37.0 837 819 169.2
B 3 64 133461 832.66 829 808 159.3
B 12 111 19058 114.55 829 808 159.3
B 15 33 18082 108.43 829 808 159.3
C 14 238 127756 678.09 801 808 187.2
C 2 16 80630 426.37 801 808 187.2
C 13 61 5484 24.98 801 808 187.2
D 8 195 6473252 39265.26 685 667 164.8
D 13 174 2033833 12333.99 685 667 164.8
D 1 52 1139418 6908.11 685 667 164.8

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