ASTROSAT CZTI

Data Quality Report

Orbit 11502

Creation date: 2024-06-27T16:13:53.097600
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/AS1A04_021T05_9000001686_11502cztM0_level2.evt modeM0/AS1A04_021T05_9000001686_11502cztM0_level2_quad_clean.evt
Size (bytes)2,248,231,680252,457,920
Size2.1 GB 240.8 MB
Events in quadrant A23,012,5811,378,193
Events in quadrant B20,839,9831,501,093
Events in quadrant C10,202,6061,655,025
Events in quadrant D12,499,4791,541,865

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04660
B04660
C04660
D04660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0837855
B0769394
C0461794
D0526424

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22775400217.571899%
B22775307713.510428%
C22775930.408342%
D227753511.541164%

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 25861 22780 2642 2642 10.22% 11.60%
B 25861 22780 2214 2214 8.56% 9.72%
C 25861 22780 0 0 0.00% 0.00%
D 25861 22779 205 205 0.79% 0.90%

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 8 5 13129690 26376.31 2442 2389 497.7
A 1 162 110472 217.17 2442 2389 497.7
A 9 143 92303 180.66 2442 2389 497.7
B 4 81 6117623 12808.78 2531 2462 477.4
B 4 239 2780431 5818.72 2531 2462 477.4
B 3 64 1587147 3319.27 2531 2462 477.4
C 12 4 33787 51.77 2610 2630 601.8
C 13 61 18948 27.11 2610 2630 601.8
C 3 202 6238 6.0 2610 2630 601.8
D 1 52 669069 1085.49 2576 2502 614.1
D 6 219 537674 871.52 2576 2502 614.1
D 2 120 463585 750.87 2576 2502 614.1

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