ASTROSAT CZTI

Data Quality Report

Orbit 53471

Creation date: 2025-08-16T23:12:23.400075
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_002T06_9000006496_53471cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53471cztM0_level2_quad_clean.evt
Size (bytes)806,696,64083,059,200
Size769.3 MB 79.2 MB
Events in quadrant A8,144,780531,660
Events in quadrant B3,521,262729,310
Events in quadrant C14,009,665215,786
Events in quadrant D3,688,418590,522

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286372
B0147112
C0458213
D0153912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6419171726.748715%
B64191512.352391%
C6418448169.819258%
D64181251.947647%

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 7609 6420 1339 1339 17.60% 20.86%
B 7609 6419 22 22 0.29% 0.34%
C 7608 6418 4227 4227 55.56% 65.86%
D 7608 6418 67 67 0.88% 1.04%

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 15 174 2241656 13380.32 678 663 167.5
A 3 63 2066421 12334.04 678 663 167.5
A 3 62 1065964 6360.6 678 663 167.5
B 4 171 222750 1412.08 736 709 157.2
B 4 216 68720 432.52 736 709 157.2
B 8 234 56729 356.26 736 709 157.2
C 1 241 9348756 82837.03 414 411 112.9
C 15 224 1317890 11674.37 414 411 112.9
C 7 64 693194 6138.85 414 411 112.9
D 2 249 204286 1005.71 719 690 202.4
D 3 12 202604 997.4 719 690 202.4
D 8 176 127731 627.55 719 690 202.4

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