ASTROSAT CZTI

Data Quality Report

Orbit 58489

Creation date: 2026-07-20T20:25:00.922712
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_044T04_9000006592_58489cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58489cztM0_level2_quad_clean.evt
Size (bytes)617,785,920107,611,200
Size589.2 MB 102.6 MB
Events in quadrant A4,820,373707,401
Events in quadrant B9,064,416648,647
Events in quadrant C3,939,286706,877
Events in quadrant D4,439,983653,375

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196770
B0323810
C0172400
D0185570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77924015.146304%
B7792167421.483573%
C7792720.924025%
D77931221.565508%

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 7792 7792 311 311 3.99% 3.99%
B 7792 7792 1454 1454 18.66% 18.66%
C 7792 7792 46 46 0.59% 0.59%
D 7793 7793 74 74 0.95% 0.95%

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 80 996328 4771.62 845 821 208.6
A 10 17 135511 645.59 845 821 208.6
A 7 64 135380 644.96 845 821 208.6
B 5 172 5695348 32315.95 807 775 176.2
B 0 245 43425 242.03 807 775 176.2
B 2 249 23590 129.47 807 775 176.2
C 2 12 205617 897.43 836 831 228.2
C 6 223 194340 848.01 836 831 228.2
C 12 252 129702 564.75 836 831 228.2
D 2 153 829943 3548.33 828 792 233.7
D 2 31 83444 353.71 828 792 233.7
D 5 173 66711 282.1 828 792 233.7

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