ASTROSAT CZTI

Data Quality Report

Orbit 36451

Creation date: 2022-07-19T05:09:38.750699
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_009T01_9000005200_36451cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36451cztM0_level2_quad_clean.evt
Size (bytes)371,183,04060,186,240
Size354.0 MB 57.4 MB
Events in quadrant A2,527,169380,155
Events in quadrant B2,988,419375,863
Events in quadrant C2,687,328365,162
Events in quadrant D2,701,318353,688

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106293
B0120222
C0109062
D0112922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4949140.282885%
B49491302.626793%
C4949651.313397%
D4950761.535354%

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 4950 8 8 0.11% 0.16%
B 7042 4950 71 71 1.01% 1.43%
C 7042 4950 55 55 0.78% 1.11%
D 7043 4951 66 66 0.94% 1.33%

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 10 83 190568 1633.82 580 568 116.3
A 7 3 67588 576.31 580 568 116.3
A 9 143 12311 100.98 580 568 116.3
B 5 172 359240 3345.1 571 556 107.2
B 5 255 158221 1470.39 571 556 107.2
B 0 190 45230 416.63 571 556 107.2
C 0 10 285194 2203.79 554 557 129.2
C 15 214 226363 1748.3 554 557 129.2
C 15 159 8566 62.01 554 557 129.2
D 13 249 212927 1604.14 555 541 132.4
D 13 171 95259 715.4 555 541 132.4
D 2 249 52852 395.1 555 541 132.4

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