ASTROSAT CZTI

Data Quality Report

Orbit 57116

Creation date: 2026-04-19T05:48:29.568215
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_083T10_9000006566_57116cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57116cztM0_level2_quad_clean.evt
Size (bytes)492,811,20091,823,040
Size470.0 MB 87.6 MB
Events in quadrant A3,096,787632,793
Events in quadrant B4,139,242642,820
Events in quadrant C4,745,847516,277
Events in quadrant D5,763,595543,005

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139373
B0166692
C0187252
D0214822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63871442.254580%
B63874717.374354%
C6387109317.112886%
D63873515.495538%

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 7542 6388 77 77 1.02% 1.21%
B 7542 6388 315 315 4.18% 4.93%
C 7542 6388 691 691 9.16% 10.82%
D 7542 6388 410 410 5.44% 6.42%

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 13 248 250814 1442.5 700 684 173.4
A 10 251 69320 395.83 700 684 173.4
A 3 14 28912 162.79 700 684 173.4
B 10 16 1148191 8055.76 669 645 142.5
B 0 213 52373 363.13 669 645 142.5
B 0 199 45442 314.47 669 645 142.5
C 15 198 2120803 12594.76 612 608 168.3
C 14 254 78839 464.72 612 608 168.3
C 12 252 48739 285.91 612 608 168.3
D 15 142 2640265 14261.97 656 626 185.1
D 12 33 149228 802.9 656 626 185.1
D 8 160 106982 574.64 656 626 185.1

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