ASTROSAT CZTI

Data Quality Report

Orbit 51217

Creation date: 2025-03-18T03:22:29.715879
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/AS1C07_001T01_9000006454_51217cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51217cztM0_level2_quad_clean.evt
Size (bytes)581,538,24091,244,160
Size554.6 MB 87.0 MB
Events in quadrant A4,344,607612,168
Events in quadrant B4,361,065669,655
Events in quadrant C7,828,512474,740
Events in quadrant D4,488,370552,410

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172952
B0176292
C0277643
D0181552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64992193.369749%
B64992604.000615%
C6499168525.927066%
D64993936.047084%

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 8544 6501 135 135 1.58% 2.08%
B 8544 6499 114 114 1.33% 1.75%
C 8544 6499 1573 1573 18.41% 24.20%
D 8544 6500 313 313 3.66% 4.82%

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 12 3 667730 3912.73 685 670 170.5
A 8 26 222254 1299.73 685 670 170.5
A 4 249 154432 901.91 685 670 170.5
B 5 172 311550 2106.59 690 664 147.6
B 4 170 254797 1722.02 690 664 147.6
B 8 128 230735 1558.98 690 664 147.6
C 4 12 2831750 17081.11 596 592 165.7
C 9 38 1004207 6055.07 596 592 165.7
C 10 252 858005 5172.99 596 592 165.7
D 3 12 745502 4037.01 664 641 184.5
D 8 176 221974 1199.58 664 641 184.5
D 2 216 175768 949.16 664 641 184.5

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