ASTROSAT CZTI

Data Quality Report

Orbit 54270

Creation date: 2025-10-10T11:44:50.421666
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_126T15_9000006516_54270cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54270cztM0_level2_quad_clean.evt
Size (bytes)684,714,24076,818,240
Size653.0 MB 73.3 MB
Events in quadrant A2,715,697602,177
Events in quadrant B5,865,212547,405
Events in quadrant C5,078,049509,633
Events in quadrant D11,217,086244,317

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125801
B0215931
C0193391
D0374944

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60491141.884609%
B6050110818.314050%
C605072912.049587%
D6049350958.009588%

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 7109 6049 12 12 0.17% 0.20%
B 7110 6051 855 855 12.03% 14.13%
C 7110 6051 654 654 9.20% 10.81%
D 7109 6049 3222 3222 45.32% 53.27%

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 11 3 52523 323.88 649 634 160.2
A 15 174 47801 294.4 649 634 160.2
A 13 254 14623 87.32 649 634 160.2
B 5 236 2268187 17755.31 592 572 127.7
B 0 213 352139 2752.75 592 572 127.7
B 7 0 249589 1949.79 592 572 127.7
C 1 29 2154048 13318.81 587 580 161.7
C 4 5 184890 1139.92 587 580 161.7
C 14 254 147399 908.05 587 580 161.7
D 8 176 9242032 79108.52 408 389 116.8
D 3 12 113269 966.25 408 389 116.8
D 2 120 59282 504.12 408 389 116.8

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