ASTROSAT CZTI

Data Quality Report

Orbit 36449

Creation date: 2022-07-19T04:53:39.064423
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_36449cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36449cztM0_level2_quad_clean.evt
Size (bytes)406,621,44071,029,440
Size387.8 MB 67.7 MB
Events in quadrant A2,743,172461,742
Events in quadrant B3,360,439455,315
Events in quadrant C2,858,402441,739
Events in quadrant D3,001,030429,506

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112352
B0133021
C0114361
D0122581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A517890.173812%
B51781222.356122%
C5178751.448436%
D5178881.699498%

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 7270 5179 4 4 0.06% 0.08%
B 7270 5179 65 65 0.89% 1.26%
C 7270 5179 50 50 0.69% 0.97%
D 7270 5179 62 62 0.85% 1.20%

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 172445 1345.18 648 638 127.7
A 9 143 44641 344.53 648 638 127.7
A 13 6 9639 70.47 648 638 127.7
B 5 172 329675 2802.66 632 619 117.4
B 5 255 221866 1884.42 632 619 117.4
B 0 189 86683 733.03 632 619 117.4
C 0 10 232939 1669.19 609 613 139.2
C 15 214 224362 1607.56 609 613 139.2
C 0 207 16193 111.94 609 613 139.2
D 13 249 220253 1465.57 620 605 149.9
D 13 171 142271 945.25 620 605 149.9
D 10 118 60140 397.24 620 605 149.9

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