ASTROSAT CZTI

Data Quality Report

Orbit 58106

Creation date: 2026-06-24T20:25:32.001825
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_042T02_9000006586_58106cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58106cztM0_level2_quad_clean.evt
Size (bytes)569,064,96090,449,280
Size542.7 MB 86.3 MB
Events in quadrant A3,174,837641,324
Events in quadrant B6,323,349628,693
Events in quadrant C2,816,766606,708
Events in quadrant D8,268,583429,663

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136511
B0231581
C0128671
D0287831

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62011402.257700%
B620171311.498145%
C6201741.193356%
D6201181429.253346%

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 7340 6200 59 59 0.80% 0.95%
B 7340 6200 468 468 6.38% 7.55%
C 7340 6200 2 2 0.03% 0.03%
D 7340 6200 1796 1796 24.47% 28.97%

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 10 251 318031 1783.96 722 702 177.9
A 4 3 11907 62.99 722 702 177.9
A 13 254 11273 59.43 722 702 177.9
B 10 128 3040085 20916.1 680 655 145.3
B 4 201 136760 936.62 680 655 145.3
B 5 185 124075 849.33 680 655 145.3
C 12 252 55433 288.01 693 685 190.1
C 12 250 17618 89.08 693 685 190.1
C 14 254 11631 57.58 693 685 190.1
D 12 110 5297953 29669.52 628 599 178.5
D 8 160 180143 1005.59 628 599 178.5
D 8 240 111234 619.64 628 599 178.5

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