ASTROSAT CZTI

Data Quality Report

Orbit 56105

Creation date: 2026-02-10T06:30:30.845352
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_083T03_9000006548_56105cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56105cztM0_level2_quad_clean.evt
Size (bytes)626,880,960110,666,880
Size597.8 MB 105.5 MB
Events in quadrant A5,933,679713,518
Events in quadrant B4,272,968802,911
Events in quadrant C7,868,200613,433
Events in quadrant D4,501,673657,522

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233681
B0181580
C0291250
D0194060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81014695.789409%
B8101530.654240%
C8102128515.860281%
D81021361.678598%

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 8101 8101 358 358 4.42% 4.42%
B 8101 8101 20 20 0.25% 0.25%
C 8102 8102 1100 1100 13.58% 13.58%
D 8102 8102 147 147 1.81% 1.81%

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 32 1332971 6405.71 827 806 208.0
A 7 64 728616 3499.67 827 806 208.0
A 3 14 291877 1399.61 827 806 208.0
B 9 254 453851 2499.7 846 815 181.2
B 0 171 95816 524.18 846 815 181.2
B 7 252 93113 509.27 846 815 181.2
C 12 254 3068452 14558.86 770 761 210.7
C 15 230 1236029 5862.42 770 761 210.7
C 12 252 153034 722.67 770 761 210.7
D 8 240 317959 1401.26 804 768 226.4
D 11 129 256487 1129.69 804 768 226.4
D 2 120 230467 1014.74 804 768 226.4

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