ASTROSAT CZTI

Data Quality Report

Orbit 36926

Creation date: 2024-06-27T21:33:15.834223
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_010T01_9000005246_36926cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36926cztM0_level2_quad_clean.evt
Size (bytes)993,441,600234,328,320
Size947.4 MB 223.5 MB
Events in quadrant A6,859,6411,567,632
Events in quadrant B7,411,8891,578,136
Events in quadrant C7,302,9221,543,992
Events in quadrant D7,586,7061,463,033

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288824
B0308333
C0295973
D0315765

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13691320.233730%
B136911270.927617%
C13691840.613542%
D136902611.906501%

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 19430 13694 10 10 0.05% 0.07%
B 19430 13694 64 64 0.33% 0.47%
C 19430 13694 54 54 0.28% 0.39%
D 19430 13694 234 234 1.20% 1.71%

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 475461 1470.24 1623 1597 322.3
A 9 143 53984 162.54 1623 1597 322.3
A 13 6 23672 68.49 1623 1597 322.3
B 5 172 304358 999.39 1618 1585 303.0
B 0 229 184386 603.39 1618 1585 303.0
B 5 255 115646 376.49 1618 1585 303.0
C 15 214 575256 1554.87 1597 1614 368.9
C 0 10 308467 831.73 1597 1614 368.9
C 0 207 122502 327.67 1597 1614 368.9
D 13 171 543169 1414.26 1585 1544 383.0
D 2 153 271956 706.08 1585 1544 383.0
D 13 249 261707 679.32 1585 1544 383.0

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