ASTROSAT CZTI

Data Quality Report

Orbit 52270

Creation date: 2025-07-21T21:19:23.541306
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_011T05_9000006474_52270cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52270cztM0_level2_quad_clean.evt
Size (bytes)889,660,80086,307,840
Size848.4 MB 82.3 MB
Events in quadrant A4,036,895692,782
Events in quadrant B6,374,711723,789
Events in quadrant C15,565,95481,058
Events in quadrant D6,368,275589,777

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172770
B0241320
C0514140
D0242642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75551281.694242%
B75564505.955532%
C7556674089.200635%
D75556388.444739%

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 7555 7555 89 89 1.18% 1.18%
B 7556 7556 274 274 3.63% 3.63%
C 7556 7556 4721 4721 62.48% 62.48%
D 7555 7555 474 474 6.27% 6.27%

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 15 174 201629 1020.77 786 766 196.8
A 4 249 148477 750.66 786 766 196.8
A 10 253 98766 498.03 786 766 196.8
B 7 0 680799 4171.25 769 741 163.0
B 10 254 658736 4035.92 769 741 163.0
B 4 171 580802 3557.9 769 741 163.0
C 15 158 7515700 94393.81 283 281 79.6
C 15 178 3608933 45324.74 283 281 79.6
C 15 224 2113010 26535.92 283 281 79.6
D 15 78 885113 4173.99 747 714 211.9
D 12 18 595260 2806.01 747 714 211.9
D 8 176 320761 1510.49 747 714 211.9

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