ASTROSAT CZTI

Data Quality Report

Orbit 37638

Creation date: 2024-06-27T21:42:30.728728
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_075T01_9000005342_37638cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37638cztM0_level2_quad_clean.evt
Size (bytes)515,079,36090,483,840
Size491.2 MB 86.3 MB
Events in quadrant A4,970,702536,774
Events in quadrant B3,125,064616,894
Events in quadrant C2,938,158626,014
Events in quadrant D4,187,100570,066

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183343
B0128022
C0119222
D0161782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A557497617.509867%
B5574550.986724%
C5574350.627915%
D55741542.762827%

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 9819 5576 707 707 7.20% 12.68%
B 9819 5574 45 45 0.46% 0.81%
C 9819 5574 30 30 0.31% 0.54%
D 9819 5574 218 218 2.22% 3.91%

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 15 222 2432020 20864.91 582 571 116.5
A 10 83 252848 2164.86 582 571 116.5
A 9 143 14180 116.78 582 571 116.5
B 5 172 177290 1417.49 654 637 124.6
B 0 189 161992 1294.74 654 637 124.6
B 5 200 69854 555.41 654 637 124.6
C 15 214 255900 1704.65 651 657 149.7
C 14 254 64233 424.6 651 657 149.7
C 0 10 60025 396.49 651 657 149.7
D 2 249 1125098 7357.52 636 620 152.8
D 2 250 374954 2449.29 636 620 152.8
D 13 249 66616 431.82 636 620 152.8

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