ASTROSAT CZTI

Data Quality Report

Orbit 44052

Creation date: 2024-06-27T22:58:46.447497
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/AS1A13_025T02_9000005938_44052cztM0_level2.fits modeM0/AS1A13_025T02_9000005938_44052cztM0_level2_quad_clean.evt
Size (bytes)402,148,800112,184,640
Size383.5 MB 107.0 MB
Events in quadrant A4,176,287754,443
Events in quadrant B3,145,270794,696
Events in quadrant C3,342,897742,120
Events in quadrant D3,721,112656,780

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167072
B0137592
C0142982
D0156353

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64391151.785992%
B6439490.760988%
C6439300.465911%
D64382153.339546%

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 7625 6441 11 11 0.14% 0.17%
B 7625 6441 7 7 0.09% 0.11%
C 7625 6441 21 21 0.28% 0.33%
D 7624 6440 108 108 1.42% 1.68%

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 1236700 8064.0 748 734 153.3
A 15 223 30009 191.0 748 734 153.3
A 13 6 11269 68.74 748 734 153.3
B 0 200 104851 706.15 755 733 147.4
B 0 213 60342 404.28 755 733 147.4
B 12 111 19056 124.27 755 733 147.4
C 14 254 190283 1097.61 731 735 172.7
C 3 233 186644 1076.53 731 735 172.7
C 1 241 61103 349.57 731 735 172.7
D 1 52 526225 2991.81 707 686 175.7
D 2 249 139179 788.42 707 686 175.7
D 5 222 97415 550.66 707 686 175.7

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