ASTROSAT CZTI

Data Quality Report

Orbit 01128

Creation date: 2024-06-27T14:07:56.830327
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_997T01_9000000214_01128cztM0_level2.evt modeM0/AS1P01_997T01_9000000214_01128cztM0_level2_quad_clean.evt
Size (bytes)931,440,96095,912,640
Size888.3 MB 91.5 MB
Events in quadrant A7,077,724637,341
Events in quadrant B7,389,948638,121
Events in quadrant C6,963,098608,046
Events in quadrant D6,380,233603,035

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252982
B0262481
C0249741
D0232301

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5987280.467680%
B5987330.551194%
C5987100.167029%
D5987260.434274%

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 7207 5987 150 150 2.08% 2.51%
B 7207 5987 215 215 2.98% 3.59%
C 7207 5988 162 162 2.25% 2.71%
D 7207 5988 140 140 1.94% 2.34%

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 12 243 6452 10.49 1844 1855 438.2
A 11 79 6149 9.8 1844 1855 438.2
A 3 111 5769 8.93 1844 1855 438.2
B 15 22 34392 72.42 1906 1917 448.4
B 8 4 21439 43.53 1906 1917 448.4
B 2 32 20790 42.09 1906 1917 448.4
C 15 241 308879 655.02 1694 1748 468.9
C 3 111 18922 36.63 1694 1748 468.9
C 3 79 12519 22.97 1694 1748 468.9
D 10 125 67591 131.35 1673 1724 501.4
D 7 67 30438 57.26 1673 1724 501.4
D 13 189 14539 25.56 1673 1724 501.4

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