ASTROSAT CZTI

Data Quality Report

Orbit 52529

Creation date: 2025-06-25T16:53:07.539021
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_011T06_9000006478_52529cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52529cztM0_level2_quad_clean.evt
Size (bytes)656,654,400103,026,240
Size626.2 MB 98.3 MB
Events in quadrant A3,667,948759,102
Events in quadrant B4,974,496689,251
Events in quadrant C4,651,581715,861
Events in quadrant D10,466,457464,210

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163526
B0198685
C01879616
D03603525

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70481762.497162%
B704971210.100724%
C70461702.412716%
D7046239934.047687%

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 7639 7051 88 88 1.15% 1.25%
B 7640 7052 295 295 3.86% 4.18%
C 7640 7050 130 130 1.70% 1.84%
D 7640 7051 2207 2207 28.89% 31.30%

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 5 243 364585 1850.4 766 747 196.6
A 13 248 84380 425.34 766 747 196.6
A 5 240 38522 192.12 766 747 196.6
B 12 32 1476403 9442.74 716 690 156.3
B 7 0 215947 1377.38 716 690 156.3
B 4 81 97647 620.4 716 690 156.3
C 15 248 454980 2188.07 733 726 207.6
C 15 224 364651 1752.97 733 726 207.6
C 13 3 321886 1546.98 733 726 207.6
D 6 42 4733040 24989.82 633 601 189.4
D 15 93 1077450 5686.34 633 601 189.4
D 8 176 942087 4971.55 633 601 189.4

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