ASTROSAT CZTI

Data Quality Report

Orbit 54023

Creation date: 2025-09-23T03:06:29.840599
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_041T01_9000006510_54023cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54023cztM0_level2_quad_clean.evt
Size (bytes)558,636,48087,255,360
Size532.8 MB 83.2 MB
Events in quadrant A2,841,216634,780
Events in quadrant B4,248,316646,280
Events in quadrant C4,183,744591,554
Events in quadrant D8,916,697330,652

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131202
B0172064
C0168211
D0309311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6285180.286396%
B62854737.525855%
C62862113.356666%
D6286269442.857143%

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 7497 6288 8 8 0.11% 0.13%
B 7496 6287 306 306 4.08% 4.87%
C 7497 6288 156 156 2.08% 2.48%
D 7497 6285 1728 1728 23.05% 27.49%

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 15 174 139651 840.88 667 648 165.3
A 2 143 22660 133.16 667 648 165.3
A 4 3 20729 121.48 667 648 165.3
B 5 236 1112287 8193.58 644 623 135.7
B 0 155 231149 1699.11 644 623 135.7
B 5 172 103917 761.33 644 623 135.7
C 4 5 694709 3826.87 657 650 181.4
C 9 38 439081 2417.4 657 650 181.4
C 13 3 135626 744.22 657 650 181.4
D 8 176 6831403 55419.19 428 407 123.3
D 2 249 75032 605.43 428 407 123.3
D 14 52 59194 476.93 428 407 123.3

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