ASTROSAT CZTI

Data Quality Report

Orbit 21973

Creation date: 2024-06-27T18:34:44.998691
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_094T01_9000003248_21973cztM0_level2.evt modeM0/AS1A07_094T01_9000003248_21973cztM0_level2_quad_clean.evt
Size (bytes)518,901,120122,428,800
Size494.9 MB 116.8 MB
Events in quadrant A3,678,730839,188
Events in quadrant B4,015,610836,202
Events in quadrant C3,596,787787,662
Events in quadrant D3,973,965782,986

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151492
B0163342
C0147572
D0159912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66301792.699849%
B66312313.483637%
C66312223.347911%
D66311762.654200%

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 9310 6630 0 0 0.00% 0.00%
B 9311 6631 20 20 0.21% 0.30%
C 9311 6631 0 0 0.00% 0.00%
D 9311 6632 31 31 0.33% 0.47%

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 11353 55.57 951 935 187.5
A 0 226 8384 39.73 951 935 187.5
A 3 137 7348 34.21 951 935 187.5
B 0 230 149434 858.64 924 904 173.0
B 3 64 122148 700.9 924 904 173.0
B 0 197 63116 359.64 924 904 173.0
C 14 238 143125 697.67 885 891 203.9
C 13 61 6220 26.14 885 891 203.9
C 0 10 2686 8.8 885 891 203.9
D 1 52 161202 728.93 919 895 219.9
D 13 172 89546 403.11 919 895 219.9
D 2 136 77377 347.77 919 895 219.9

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