ASTROSAT CZTI

Data Quality Report

Orbit 57732

Creation date: 2026-05-30T17:28:14.812923
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_083T16_9000006580_57732cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57732cztM0_level2_quad_clean.evt
Size (bytes)675,316,800100,730,880
Size644.0 MB 96.1 MB
Events in quadrant A3,992,697702,750
Events in quadrant B5,089,845694,405
Events in quadrant C11,240,370500,191
Events in quadrant D4,100,177636,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164580
B0203180
C0385460
D0172140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7416160.215750%
B74165737.726537%
C7416246633.252427%
D7416791.065264%

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 7416 7416 6 6 0.08% 0.08%
B 7416 7416 465 465 6.27% 6.27%
C 7415 7415 2168 2168 29.24% 29.24%
D 7416 7416 68 68 0.92% 0.92%

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 3 128 821358 4189.51 786 766 195.9
A 3 17 101059 512.04 786 766 195.9
A 3 245 19714 96.74 786 766 195.9
B 0 171 1232515 7888.99 735 707 156.1
B 8 128 406857 2601.15 735 707 156.1
B 4 142 137440 875.69 735 707 156.1
C 12 254 4048071 21813.49 677 669 185.5
C 15 224 3243359 17476.49 677 669 185.5
C 9 38 789395 4250.84 677 669 185.5
D 3 12 211607 973.88 766 729 216.5
D 9 49 189960 873.91 766 729 216.5
D 2 249 173716 798.89 766 729 216.5

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