ASTROSAT CZTI

Data Quality Report

Orbit 52076

Creation date: 2025-05-15T01:12:06.976114
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/AS1C09_011T07_9000006470_52076cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52076cztM0_level2_quad_clean.evt
Size (bytes)825,120,00064,722,240
Size786.9 MB 61.7 MB
Events in quadrant A3,412,619548,025
Events in quadrant B6,150,934490,048
Events in quadrant C6,931,001442,273
Events in quadrant D13,617,55089,108

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138031
B0220901
C0245175
D0442771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55711352.423263%
B5571119521.450368%
C5570135124.254937%
D5571479786.106624%

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 6776 5572 101 101 1.49% 1.81%
B 6776 5572 1075 1075 15.86% 19.29%
C 6774 5570 1231 1231 18.17% 22.10%
D 6775 5570 4727 4727 69.77% 84.87%

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 6 196 396125 2701.06 585 569 146.4
A 4 3 185812 1264.93 585 569 146.4
A 6 162 110867 753.17 585 569 146.4
B 10 128 2978048 25613.38 550 532 116.2
B 5 172 442244 3799.72 550 532 116.2
B 8 128 69233 590.98 550 532 116.2
C 15 224 3725634 25357.4 533 529 146.9
C 5 80 252140 1712.76 533 529 146.9
C 13 3 234600 1593.36 533 529 146.9
D 15 94 8767998 114519.38 259 245 76.6
D 6 42 2542543 33206.04 259 245 76.6
D 3 12 383041 4999.86 259 245 76.6

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