ASTROSAT CZTI

Data Quality Report

Orbit 14950

Creation date: 2024-06-27T17:01:42.664508
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/AS1T02_056T01_9000002210_14950cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14950cztM0_level2_quad_clean.evt
Size (bytes)614,882,88061,626,240
Size586.4 MB 58.8 MB
Events in quadrant A2,949,921381,815
Events in quadrant B3,320,634382,163
Events in quadrant C2,917,393369,777
Events in quadrant D9,045,156329,897

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121912
B0132971
C0119611
D0309151

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5745280.487380%
B57451893.289817%
C5745140.243690%
D5745146525.500435%

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 7011 5747 1 1 0.01% 0.02%
B 7011 5747 54 54 0.77% 0.94%
C 7011 5747 0 0 0.00% 0.00%
D 7011 5747 1569 1569 22.38% 27.30%

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 12 189 42364 277.81 745 733 149.9
A 9 143 20495 131.87 745 733 149.9
A 3 1 13500 85.19 745 733 149.9
B 10 16 356318 2583.68 732 716 137.6
B 0 219 37543 267.57 732 716 137.6
B 0 189 20325 142.47 732 716 137.6
C 3 233 155851 949.81 708 711 163.3
C 13 61 5119 26.99 708 711 163.3
C 3 202 1756 6.4 708 711 163.3
D 7 254 6273422 39526.78 669 652 158.7
D 13 249 46368 288.07 669 652 158.7
D 7 223 41766 259.07 669 652 158.7

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