ASTROSAT CZTI

Data Quality Report

Orbit 39630

Creation date: 2024-06-27T22:07:03.289063
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/AS1A12_018T01_9000005488_39630cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39630cztM0_level2_quad_clean.evt
Size (bytes)440,421,12085,564,800
Size420.0 MB 81.6 MB
Events in quadrant A2,856,885606,223
Events in quadrant B3,807,835556,045
Events in quadrant C5,726,025524,292
Events in quadrant D3,491,756525,546

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117873
B0150612
C0206172
D0139582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5407230.425375%
B540759210.948770%
C540769712.890697%
D54072123.920843%

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 7080 5408 9 9 0.13% 0.17%
B 7080 5408 515 515 7.27% 9.52%
C 7080 5408 671 671 9.48% 12.41%
D 7080 5408 180 180 2.54% 3.33%

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 402233 3320.42 592 579 121.0
A 15 222 142981 1177.22 592 579 121.0
A 6 10 11740 92.26 592 579 121.0
B 5 172 1505475 14307.35 548 532 105.2
B 5 255 132255 1252.28 548 532 105.2
B 12 111 13077 119.26 548 532 105.2
C 9 187 1942298 15128.58 551 555 128.3
C 15 208 1402432 10922.36 551 555 128.3
C 15 214 217704 1691.86 551 555 128.3
D 13 249 818352 5891.39 567 551 138.8
D 1 52 175032 1256.95 567 551 138.8
D 2 250 89142 638.2 567 551 138.8

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