ASTROSAT CZTI

Data Quality Report

Orbit 58190

Creation date: 2026-06-30T19:46:58.776453
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_042T02_9000006586_58190cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58190cztM0_level2_quad_clean.evt
Size (bytes)455,146,56092,931,840
Size434.1 MB 88.6 MB
Events in quadrant A2,885,399626,411
Events in quadrant B4,482,006659,872
Events in quadrant C2,999,648591,126
Events in quadrant D5,981,229487,651

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132101
B0176031
C0136311
D0223221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6427510.793527%
B64272503.889840%
C6427991.540377%
D642893314.514624%

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 7422 6428 4 4 0.05% 0.06%
B 7422 6428 87 87 1.17% 1.35%
C 7422 6428 48 48 0.65% 0.75%
D 7423 6429 789 789 10.63% 12.27%

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 13 248 38352 215.04 718 702 175.1
A 4 3 31010 173.11 718 702 175.1
A 3 245 17982 98.7 718 702 175.1
B 10 128 1345369 8960.59 703 678 150.1
B 0 153 78834 520.81 703 678 150.1
B 4 201 61285 403.87 703 678 150.1
C 6 223 175778 912.88 697 688 191.8
C 12 252 40243 206.23 697 688 191.8
C 15 201 28609 145.57 697 688 191.8
D 8 160 1226320 6717.09 649 621 182.5
D 8 240 901961 4939.53 649 621 182.5
D 12 110 802473 4394.32 649 621 182.5

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