ASTROSAT CZTI

Data Quality Report

Orbit 00154

Creation date: 2024-06-27T13:57:07.438206
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/AS1P01_120T01_9000000006_00154cztM0_level2.evt modeM0/AS1P01_120T01_9000000006_00154cztM0_level2_quad_clean.evt
Size (bytes)953,611,20046,134,720
Size909.4 MB 44.0 MB
Events in quadrant A8,393,407240,990
Events in quadrant B7,421,412270,502
Events in quadrant C6,298,814266,911
Events in quadrant D6,425,012256,135

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288012
B0258081
C0224881
D0230472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53065139.668300%
B52431262.403204%
C532330.056359%
D47541853.891460%

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 6914 5309 1030 1030 14.90% 19.40%
B 6914 5247 470 470 6.80% 8.96%
C 6914 5325 81 81 1.17% 1.52%
D 6914 4758 458 458 6.62% 9.63%

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 0 86 1805968 5355.46 1656 1639 336.9
A 14 201 37177 105.48 1656 1639 336.9
A 8 50 35793 101.37 1656 1639 336.9
B 10 199 726702 1839.99 1675 1681 394.0
B 8 236 61068 150.71 1675 1681 394.0
B 5 216 42032 102.4 1675 1681 394.0
C 9 54 38107 82.38 1570 1629 442.8
C 0 218 29393 62.7 1570 1629 442.8
C 0 207 12905 25.47 1570 1629 442.8
D 14 53 475758 1194.45 1379 1419 397.1
D 13 223 241071 603.48 1379 1419 397.1
D 13 222 66821 164.69 1379 1419 397.1

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