ASTROSAT CZTI

Data Quality Report

Orbit 53402

Creation date: 2025-08-12T08:08:20.876613
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/AS1C09_011T09_9000006494_53402cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53402cztM0_level2_quad_clean.evt
Size (bytes)754,721,280110,557,440
Size719.8 MB 105.4 MB
Events in quadrant A5,514,598722,622
Events in quadrant B7,303,943764,641
Events in quadrant C8,685,870615,994
Events in quadrant D5,812,150685,845

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221272
B0273172
C0314962
D0228922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80235376.693257%
B802381610.170759%
C8023151318.858282%
D80231842.293406%

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 8432 8024 369 369 4.38% 4.60%
B 8433 8025 479 479 5.68% 5.97%
C 8433 8025 1286 1286 15.25% 16.02%
D 8433 8025 182 182 2.16% 2.27%

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 446810 2174.35 828 808 205.1
A 7 191 445501 2167.97 828 808 205.1
A 7 190 391479 1904.6 828 808 205.1
B 4 171 1311717 7461.04 828 797 175.7
B 2 249 997606 5673.29 828 797 175.7
B 4 206 389563 2212.64 828 797 175.7
C 15 224 2285079 10911.08 760 752 209.4
C 1 241 2181984 10418.65 760 752 209.4
C 15 178 343787 1638.51 760 752 209.4
D 0 18 1431355 6097.35 826 790 234.6
D 3 12 246878 1048.88 826 790 234.6
D 2 153 229302 973.96 826 790 234.6

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