ASTROSAT CZTI

Data Quality Report

Orbit 15571

Creation date: 2024-06-27T17:10:20.503970
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/AS1A04_198T01_9000002308_15571cztM0_level2.evt modeM0/AS1A04_198T01_9000002308_15571cztM0_level2_quad_clean.evt
Size (bytes)458,092,80094,780,800
Size436.9 MB 90.4 MB
Events in quadrant A3,220,989600,692
Events in quadrant B3,284,124618,215
Events in quadrant C3,439,634603,566
Events in quadrant D3,481,632589,281

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138543
B0138792
C0143062
D0146302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6583330.501291%
B6583370.562054%
C65831532.324168%
D6583620.941820%

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 8724 6586 11 11 0.13% 0.17%
B 8724 6585 5 5 0.06% 0.08%
C 8724 6586 38 38 0.44% 0.58%
D 8724 6586 44 44 0.50% 0.67%

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 14 238 86416 531.1 805 790 161.2
A 13 248 32161 194.58 805 790 161.2
A 0 226 7056 38.87 805 790 161.2
B 5 65 55807 355.3 812 791 154.8
B 12 111 17704 109.23 812 791 154.8
B 4 173 15328 93.88 812 791 154.8
C 3 233 225928 1222.15 790 796 184.2
C 14 238 121860 657.21 790 796 184.2
C 0 207 10257 51.36 790 796 184.2
D 5 222 189097 970.5 801 778 194.0
D 10 70 67621 344.47 801 778 194.0
D 13 249 64529 328.54 801 778 194.0

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