ASTROSAT CZTI

Data Quality Report

Orbit 55981

Creation date: 2026-02-06T07:46:20.885208
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_066T02_9000006546_55981cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55981cztM0_level2_quad_clean.evt
Size (bytes)444,147,84089,064,000
Size423.6 MB 84.9 MB
Events in quadrant A5,754,284540,953
Events in quadrant B2,996,426632,763
Events in quadrant C3,208,051561,185
Events in quadrant D3,990,841521,083

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214551
B0134671
C0143621
D0163001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A631773711.666931%
B6317630.997309%
C6318831.313707%
D63182764.368471%

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 7307 6317 657 657 8.99% 10.40%
B 7307 6318 5 5 0.07% 0.08%
C 7308 6319 71 71 0.97% 1.12%
D 7308 6319 252 252 3.45% 3.99%

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 12 115 2431157 15372.89 635 619 158.1
A 7 64 378802 2391.97 635 619 158.1
A 4 249 173146 1091.21 635 619 158.1
B 0 213 156296 1116.08 652 631 139.5
B 0 199 68183 484.33 652 631 139.5
B 0 229 39620 279.54 652 631 139.5
C 2 12 554049 3131.97 637 630 176.7
C 6 223 35114 195.16 637 630 176.7
C 12 189 25857 142.77 637 630 176.7
D 2 249 824296 4496.39 633 604 183.2
D 11 129 141789 770.7 633 604 183.2
D 8 245 103511 561.75 633 604 183.2

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