ASTROSAT CZTI

Data Quality Report

Orbit 58136

Creation date: 2026-06-29T16:50:09.899985
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_58136cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58136cztM0_level2_quad_clean.evt
Size (bytes)445,086,720100,333,440
Size424.5 MB 95.7 MB
Events in quadrant A3,098,824667,049
Events in quadrant B4,014,337703,427
Events in quadrant C3,501,115633,702
Events in quadrant D5,344,569570,347

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138901
B0162201
C0151191
D0204491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66461402.106530%
B66472603.911539%
C66471231.850459%
D66474656.995637%

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 7681 6646 7 7 0.09% 0.11%
B 7682 6648 100 100 1.30% 1.50%
C 7682 6648 34 34 0.44% 0.51%
D 7682 6647 306 306 3.98% 4.60%

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 43354 225.84 765 747 188.7
A 11 3 27341 140.97 765 747 188.7
A 3 245 19425 99.01 765 747 188.7
B 10 128 349810 2188.94 742 715 159.5
B 2 249 247200 1545.54 742 715 159.5
B 5 172 238600 1491.62 742 715 159.5
C 12 252 428490 2128.06 736 731 201.0
C 13 3 83586 412.2 736 731 201.0
C 6 223 49543 242.84 736 731 201.0
D 12 110 1332676 6493.99 726 693 205.1
D 8 160 535062 2605.28 726 693 205.1
D 8 240 184495 896.11 726 693 205.1

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