ASTROSAT CZTI

Data Quality Report

Orbit 33104

Creation date: 2024-06-27T20:44:53.608573
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/AS1A11_008T06_9000004762_33104cztM0_level2.evt modeM0/AS1A11_008T06_9000004762_33104cztM0_level2_quad_clean.evt
Size (bytes)679,798,08091,497,600
Size648.3 MB 87.3 MB
Events in quadrant A2,585,696685,551
Events in quadrant B3,434,561660,653
Events in quadrant C7,423,823492,361
Events in quadrant D6,805,236579,433

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106522
B0134621
C0254611
D0237701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A501330.059844%
B50132354.687812%
C5013210141.911031%
D5013109521.843208%

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 7076 5014 0 0 0.00% 0.00%
B 7076 5014 140 140 1.98% 2.79%
C 7076 5014 1630 1630 23.04% 32.51%
D 7076 5014 1103 1103 15.59% 22.00%

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 13 6 10667 76.47 661 650 131.0
A 13 254 8398 59.15 661 650 131.0
A 7 16 7542 52.62 661 650 131.0
B 5 172 617599 5243.17 634 623 117.7
B 0 189 153043 1295.29 634 623 117.7
B 0 245 47837 401.23 634 623 117.7
C 8 111 4679001 40550.2 510 517 115.4
C 7 221 306583 2652.79 510 517 115.4
C 0 10 213742 1848.1 510 517 115.4
D 7 223 2658203 17163.94 602 592 154.8
D 8 195 763648 4928.13 602 592 154.8
D 12 218 320774 2067.87 602 592 154.8

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