ASTROSAT CZTI

Data Quality Report

Orbit 51583

Creation date: 2025-04-11T20:22:38.820845
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/AS1A13_037T05_9000006460_51583cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51583cztM0_level2_quad_clean.evt
Size (bytes)675,676,80078,814,080
Size644.4 MB 75.2 MB
Events in quadrant A5,834,299648,854
Events in quadrant B5,031,727694,070
Events in quadrant C8,078,6002,741
Events in quadrant D5,530,297562,812

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219572
B0195212
C0289522
D0210482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68564065.921820%
B68565457.949242%
C6856684399.810385%
D68566829.947491%

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 7885 6856 136 136 1.72% 1.98%
B 7886 6856 262 262 3.32% 3.82%
C 7885 6855 329 329 4.17% 4.80%
D 7886 6857 455 455 5.77% 6.64%

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 1706906 8950.61 773 753 190.6
A 12 250 319019 1669.65 773 753 190.6
A 12 194 206809 1080.99 773 753 190.6
B 5 185 688077 4213.82 759 733 163.1
B 10 44 481207 2945.59 759 733 163.1
B 10 246 221540 1353.68 759 733 163.1
C 15 198 1679207 105195.48 51 50 16.0
C 15 246 1290672 80854.62 51 50 16.0
C 15 215 1232526 77211.9 51 50 16.0
D 8 176 1168320 5714.89 726 700 204.3
D 12 6 737640 3606.93 726 700 204.3
D 3 12 333104 1626.94 726 700 204.3

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