ASTROSAT CZTI

Data Quality Report

Orbit 36709

Creation date: 2024-06-27T21:30:35.813221
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_001T09_9000005236_36709cztM0_level2.evt modeM0/AS1C07_001T09_9000005236_36709cztM0_level2_quad_clean.evt
Size (bytes)405,046,080103,688,640
Size386.3 MB 98.9 MB
Events in quadrant A2,663,211704,050
Events in quadrant B2,894,162720,258
Events in quadrant C3,208,739690,835
Events in quadrant D3,144,165657,802

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112233
B0119092
C0127162
D0129392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5247210.400229%
B5247791.505622%
C52471663.163713%
D52471412.687250%

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 7311 5248 8 8 0.11% 0.15%
B 7311 5248 52 52 0.71% 0.99%
C 7311 5248 135 135 1.85% 2.57%
D 7311 5248 117 117 1.60% 2.23%

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 212651 1751.89 607 596 121.0
A 9 143 49971 407.91 607 596 121.0
A 7 3 34627 281.15 607 596 121.0
B 5 255 247227 2186.92 606 593 112.8
B 5 172 99954 881.04 606 593 112.8
B 0 221 55072 483.07 606 593 112.8
C 0 10 368340 2786.76 576 579 132.0
C 14 254 347647 2629.96 576 579 132.0
C 15 214 235674 1781.47 576 579 132.0
D 13 249 334588 2408.3 575 559 138.7
D 13 171 199708 1435.83 575 559 138.7
D 2 153 118020 846.88 575 559 138.7

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