ASTROSAT CZTI

Data Quality Report

Orbit 56381

Creation date: 2026-02-28T19:58:11.211579
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_083T05_9000006554_56381cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56381cztM0_level2_quad_clean.evt
Size (bytes)715,780,80094,507,200
Size682.6 MB 90.1 MB
Events in quadrant A6,557,211602,497
Events in quadrant B3,581,953728,782
Events in quadrant C4,817,004624,911
Events in quadrant D10,981,285403,489

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244650
B0157610
C0195890
D0376663

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A720385611.883937%
B7203741.027350%
C72043905.413659%
D7203269037.345550%

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 7203 7203 791 791 10.98% 10.98%
B 7203 7203 37 37 0.51% 0.51%
C 7204 7204 299 299 4.15% 4.15%
D 7203 7203 2333 2333 32.39% 32.39%

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 12 3 1816909 10018.12 723 703 181.3
A 3 14 425970 2345.75 723 703 181.3
A 3 79 303325 1669.25 723 703 181.3
B 5 185 181351 1108.67 763 735 162.9
B 4 21 70656 429.2 763 735 162.9
B 10 247 65572 397.99 763 735 162.9
C 13 3 538639 2691.79 732 726 199.8
C 15 230 484626 2421.5 732 726 199.8
C 12 254 415319 2074.68 732 726 199.8
D 8 129 6691688 39108.22 595 567 171.1
D 12 3 1179342 6889.7 595 567 171.1
D 2 249 497985 2907.31 595 567 171.1

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