ASTROSAT CZTI

Data Quality Report

Orbit 56758

Creation date: 2026-03-26T05:41:23.373011
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/AS1A14_083T05_9000006560_56758cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56758cztM0_level2_quad_clean.evt
Size (bytes)567,097,920105,105,600
Size540.8 MB 100.2 MB
Events in quadrant A4,426,949698,663
Events in quadrant B6,347,207708,344
Events in quadrant C5,978,623612,488
Events in quadrant D3,652,453636,594

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184900
B0240700
C0232680
D0166670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75601952.579365%
B75607359.722222%
C756079510.515873%
D7560440.582011%

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 7560 7560 129 129 1.71% 1.71%
B 7560 7560 364 364 4.81% 4.81%
C 7560 7560 642 642 8.49% 8.49%
D 7560 7560 64 64 0.85% 0.85%

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 3 14 551855 2797.58 794 774 197.0
A 3 62 399724 2025.28 794 774 197.0
A 10 251 209524 1059.73 794 774 197.0
B 4 206 1190399 7050.2 774 743 168.7
B 5 185 1186064 7024.51 774 743 168.7
B 8 128 530750 3140.96 774 743 168.7
C 14 96 942156 4750.97 730 724 198.2
C 15 230 938937 4734.73 730 724 198.2
C 13 3 903370 4555.24 730 724 198.2
D 2 252 301257 1369.54 773 736 219.4
D 5 173 78853 356.0 773 736 219.4
D 2 236 64811 292.0 773 736 219.4

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