ASTROSAT CZTI

Data Quality Report

Orbit 59317

Creation date: 2026-09-14T08:11:58.837221
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_021T06_9000006606_59317cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59317cztM0_level2_quad_clean.evt
Size (bytes)634,564,800103,213,440
Size605.2 MB 98.4 MB
Events in quadrant A3,356,444711,633
Events in quadrant B6,174,888723,871
Events in quadrant C3,422,463682,281
Events in quadrant D9,957,861488,388

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157230
B0236990
C0158090
D0348450

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7452130.174450%
B74537239.700792%
C7453380.509862%
D7453176523.681739%

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 7452 7452 10 10 0.13% 0.13%
B 7453 7453 435 435 5.84% 5.84%
C 7453 7453 34 34 0.46% 0.46%
D 7453 7453 1563 1563 20.97% 20.97%

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 15 233 118832 609.76 784 766 193.6
A 7 64 118599 608.56 784 766 193.6
A 3 245 36848 186.35 784 766 193.6
B 4 171 1833525 11257.47 764 737 162.8
B 4 236 823253 5052.11 764 737 162.8
B 5 236 212013 1297.71 764 737 162.8
C 4 5 145089 691.01 770 763 208.9
C 12 252 106136 504.51 770 763 208.9
C 6 13 39446 185.21 770 763 208.9
D 12 110 6581529 32704.83 704 674 201.2
D 11 129 227076 1125.15 704 674 201.2
D 2 249 153891 761.44 704 674 201.2

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

TCT plots

Parameter TCT0 TCT_healed
Tct