ASTROSAT CZTI

Data Quality Report

Orbit 53847

Creation date: 2025-09-11T13:09:22.229696
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_057T04_9000006508_53847cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53847cztM0_level2_quad_clean.evt
Size (bytes)748,005,12090,619,200
Size713.4 MB 86.4 MB
Events in quadrant A3,537,508676,705
Events in quadrant B3,599,140721,631
Events in quadrant C9,049,645485,830
Events in quadrant D10,983,227392,113

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149842
B0153472
C0315162
D0371662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6707891.326972%
B67071281.908454%
C6707193128.790816%
D6707265339.555688%

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 7892 6708 62 62 0.79% 0.92%
B 7892 6707 47 47 0.60% 0.70%
C 7892 6707 1929 1929 24.44% 28.76%
D 7892 6707 2754 2754 34.90% 41.06%

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 8 249 233747 1259.3 738 719 185.0
A 12 115 108435 582.1 738 719 185.0
A 15 174 88995 477.05 738 719 185.0
B 0 213 198286 1262.07 734 710 156.5
B 0 171 142762 907.4 734 710 156.5
B 5 185 102943 653.04 734 710 156.5
C 1 241 3269147 18993.4 623 619 172.1
C 15 224 3003376 17449.0 623 619 172.1
C 13 3 91550 528.4 623 619 172.1
D 15 93 6817277 41122.51 572 548 165.8
D 10 172 879893 5304.73 572 548 165.8
D 13 153 235757 1418.92 572 548 165.8

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