ASTROSAT CZTI

Data Quality Report

Orbit 58472

Creation date: 2026-07-19T11:29:59.018483
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_044T04_9000006592_58472cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58472cztM0_level2_quad_clean.evt
Size (bytes)449,680,320102,697,920
Size428.8 MB 97.9 MB
Events in quadrant A3,561,034664,137
Events in quadrant B4,374,951716,712
Events in quadrant C4,353,931630,920
Events in quadrant D3,803,570603,512

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156421
B0177331
C0180091
D0165161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71002002.816901%
B71002603.661972%
C71003274.605634%
D71001732.436620%

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 7590 7101 44 44 0.58% 0.62%
B 7590 7101 32 32 0.42% 0.45%
C 7590 7101 208 208 2.74% 2.93%
D 7590 7101 99 99 1.30% 1.39%

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 10 17 264569 1325.13 802 781 199.1
A 12 114 79897 397.44 802 781 199.1
A 12 80 22390 108.55 802 781 199.1
B 5 172 904285 5251.29 790 761 172.1
B 6 255 89307 514.63 790 761 172.1
B 2 249 88460 509.71 790 761 172.1
C 5 10 518464 2450.68 768 760 211.2
C 4 5 375811 1775.4 768 760 211.2
C 14 245 140070 659.46 768 760 211.2
D 8 240 441823 2016.84 773 739 218.7
D 2 120 162321 738.83 773 739 218.7
D 3 12 71475 323.44 773 739 218.7

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