ASTROSAT CZTI

Data Quality Report

Orbit 50860

Creation date: 2025-02-22T03:58:53.763148
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_9000006450_50860cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50860cztM0_level2_quad_clean.evt
Size (bytes)572,186,880110,471,040
Size545.7 MB 105.4 MB
Events in quadrant A4,445,754734,315
Events in quadrant B4,492,428792,403
Events in quadrant C6,386,230628,639
Events in quadrant D5,249,871646,436

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186491
B0188851
C0245251
D0209311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78111211.549097%
B78112082.662911%
C781199612.751248%
D78112853.648701%

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 7811 7811 79 79 1.01% 1.01%
B 7811 7811 94 94 1.20% 1.20%
C 7811 7811 761 761 9.74% 9.74%
D 7811 7811 224 224 2.87% 2.87%

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 4 191 228764 1093.59 836 816 208.4
A 8 38 139904 667.28 836 816 208.4
A 4 3 105492 502.19 836 816 208.4
B 4 206 523373 2968.23 833 804 176.1
B 10 247 119849 676.18 833 804 176.1
B 5 172 79751 448.42 833 804 176.1
C 4 5 1435641 6843.84 773 766 209.7
C 15 229 785820 3744.43 773 766 209.7
C 13 3 211212 1003.75 773 766 209.7
D 6 191 354569 1572.72 803 774 225.0
D 2 216 209192 926.48 803 774 225.0
D 7 96 173458 767.63 803 774 225.0

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