ASTROSAT CZTI

Data Quality Report

Orbit 26341

Creation date: 2024-06-27T19:27:38.822788
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/AS1A09_008T02_9000003796_26341cztM0_level2.evt modeM0/AS1A09_008T02_9000003796_26341cztM0_level2_quad_clean.evt
Size (bytes)841,760,64070,565,760
Size802.8 MB 67.3 MB
Events in quadrant A3,207,048497,941
Events in quadrant B3,270,460504,465
Events in quadrant C5,620,003471,593
Events in quadrant D12,960,261212,355

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137810
B0138430
C0209300
D0428460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6431500.777484%
B6431510.793034%
C643088413.748056%
D6430455670.855365%

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 7566 6432 0 0 0.00% 0.00%
B 7566 6432 4 4 0.05% 0.06%
C 7565 6431 582 582 7.69% 9.05%
D 7564 6429 3944 3944 52.14% 61.35%

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 6 16 24801 145.76 825 811 164.6
A 13 254 10113 56.52 825 811 164.6
A 3 137 7427 40.2 825 811 164.6
B 0 230 22981 143.59 821 803 154.5
B 3 64 21904 136.62 821 803 154.5
B 12 16 21011 130.84 821 803 154.5
C 3 233 2573673 14949.65 745 750 172.1
C 14 238 121028 698.86 745 750 172.1
C 2 16 16823 93.39 745 750 172.1
D 1 52 11529120 131817.42 368 359 87.5
D 11 176 24454 275.5 368 359 87.5
D 2 234 14537 162.11 368 359 87.5

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