ASTROSAT CZTI

Data Quality Report

Orbit 51760

Creation date: 2025-04-23T18:48:36.102236
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_090T01_9000006464_51760cztM0_level2.fits modeM0/AS1A13_090T01_9000006464_51760cztM0_level2_quad_clean.evt
Size (bytes)787,786,56094,936,320
Size751.3 MB 90.5 MB
Events in quadrant A5,186,367674,473
Events in quadrant B6,643,575676,192
Events in quadrant C3,895,357691,305
Events in quadrant D12,848,164305,792

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206920
B0250190
C0170270
D0434780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75723975.243001%
B7573108514.327215%
C75731331.756239%
D7573437957.823848%

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 7572 7572 59 59 0.78% 0.78%
B 7573 7573 492 492 6.50% 6.50%
C 7573 7573 47 47 0.62% 0.62%
D 7573 7570 2953 2953 38.99% 39.01%

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 948054 4540.17 858 836 208.6
A 12 3 258627 1235.63 858 836 208.6
A 13 248 125551 597.78 858 836 208.6
B 4 206 2401591 13370.26 818 788 179.6
B 1 223 262115 1455.35 818 788 179.6
B 0 216 137264 760.05 818 788 179.6
C 3 233 121880 528.48 841 837 229.0
C 0 192 120696 523.31 841 837 229.0
C 15 189 96696 418.53 841 837 229.0
D 11 129 9382547 61123.0 549 529 153.5
D 15 94 621107 4043.01 549 529 153.5
D 7 222 157964 1025.67 549 529 153.5

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