ASTROSAT CZTI

Data Quality Report

Orbit 58121

Creation date: 2026-06-25T20:30:48.367167
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_58121cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58121cztM0_level2_quad_clean.evt
Size (bytes)742,927,68077,771,520
Size708.5 MB 74.2 MB
Events in quadrant A3,065,612635,738
Events in quadrant B8,987,278464,566
Events in quadrant C3,087,902601,705
Events in quadrant D11,873,902215,481

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132361
B0309801
C0136441
D0396162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62611302.076346%
B6262230236.761418%
C62621151.836474%
D6261402364.254911%

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 7331 6262 12 12 0.16% 0.19%
B 7332 6262 1733 1733 23.64% 27.67%
C 7332 6263 21 21 0.29% 0.34%
D 7331 6262 3572 3572 48.72% 57.04%

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 11 3 98407 544.24 725 705 179.5
A 10 251 85781 473.91 725 705 179.5
A 3 14 27171 147.43 725 705 179.5
B 10 128 4376965 35135.83 581 559 124.6
B 5 172 1025488 8228.61 581 559 124.6
B 2 249 879664 7057.87 581 559 124.6
C 1 16 141805 741.88 696 690 190.2
C 12 252 88910 463.8 696 690 190.2
C 13 3 45237 234.2 696 690 190.2
D 12 110 8531223 61042.18 492 469 139.8
D 3 224 650356 4650.29 492 469 139.8
D 7 222 252386 1802.6 492 469 139.8

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