ASTROSAT CZTI

Data Quality Report

Orbit 11827

Creation date: 2024-06-27T16:18:49.031521
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_022T07_9000001748_11827cztM0_level2.evt modeM0/AS1A04_022T07_9000001748_11827cztM0_level2_quad_clean.evt
Size (bytes)483,753,60061,240,320
Size461.3 MB 58.4 MB
Events in quadrant A3,024,760360,825
Events in quadrant B5,130,669350,525
Events in quadrant C2,820,823366,869
Events in quadrant D3,258,089347,735

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130782
B0192191
C0125901
D0140591

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6131931.516881%
B613174612.167672%
C6131240.391453%
D6131480.782907%

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 7237 6133 0 0 0.00% 0.00%
B 7237 6133 488 488 6.74% 7.96%
C 7237 6133 1 1 0.01% 0.02%
D 7237 6133 20 20 0.28% 0.33%

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 1 162 79379 523.12 735 720 150.4
A 1 178 41503 271.23 735 720 150.4
A 1 161 36485 237.85 735 720 150.4
B 10 16 1557085 11507.09 718 700 135.3
B 4 239 467682 3452.62 718 700 135.3
B 3 64 172871 1272.94 718 700 135.3
C 7 238 13067 73.83 719 723 167.2
C 13 61 5389 27.91 719 723 167.2
C 12 4 2405 10.06 719 723 167.2
D 1 52 319932 1765.13 704 688 180.9
D 13 249 64019 350.16 704 688 180.9
D 7 80 58404 319.11 704 688 180.9

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