ASTROSAT CZTI

Data Quality Report

Orbit 37870

Creation date: 2024-06-27T21:45:30.585820
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/AS1C07_001T12_9000005352_37870cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37870cztM0_level2_quad_clean.evt
Size (bytes)432,236,16075,430,080
Size412.2 MB 71.9 MB
Events in quadrant A2,636,290509,126
Events in quadrant B2,754,262505,461
Events in quadrant C2,564,442481,055
Events in quadrant D4,799,313441,383

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107733
B0112842
C0105272
D0176022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495080.161616%
B4950741.494949%
C4950390.787879%
D495051410.383838%

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 7042 4951 1 1 0.01% 0.02%
B 7042 4951 54 54 0.77% 1.09%
C 7042 4951 36 36 0.51% 0.73%
D 7042 4951 468 468 6.65% 9.45%

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 10 83 340974 2934.28 574 564 116.0
A 15 222 37621 319.42 574 564 116.0
A 12 189 16733 139.37 574 564 116.0
B 5 172 264551 2514.69 560 548 105.0
B 0 229 91996 871.06 560 548 105.0
B 0 189 48212 454.01 560 548 105.0
C 15 214 210844 1644.84 551 554 127.8
C 0 10 148528 1157.42 551 554 127.8
C 14 254 49835 385.47 551 554 127.8
D 1 52 1285561 9858.58 539 524 130.3
D 2 249 796264 6104.78 539 524 130.3
D 1 47 163402 1249.57 539 524 130.3

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