ASTROSAT CZTI

Data Quality Report

Orbit 20190519_A05_221T01_9000002936_level2

Creation date: 2025-11-30T08:24:12.470005
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/AS1A05_221T01_9000002936cztM0_level2.fits modeM0/AS1A05_221T01_9000002936cztM0_level2_quad_clean.evt
Size (bytes)333,106,560168,373,440
Size317.7 MB 160.6 MB
Events in quadrant A2,101,894754,341
Events in quadrant B2,008,046767,105
Events in quadrant C2,058,590733,604
Events in quadrant D1,710,572632,739

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0678500
B0712190
C0695530
D0870480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0730
B0730
C0730
D0730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06540
B06540
C06540
D06540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A321392080.647189%
B321395051.571300%
C321393831.191699%
D3213925037.788046%

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 39464 32137 0 0 0.00% 0.00%
B 39464 32129 0 0 0.00% 0.00%
C 39464 32136 0 0 0.00% 0.00%
D 39464 31340 0 0 0.00% 0.00%

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 0 29 2016 11.22 547 517 133.5
A 7 110 1711 8.94 547 517 133.5
A 9 19 1654 8.51 547 517 133.5
B 2 9 1584 10.37 530 508 103.8
B 2 8 1402 8.61 530 508 103.8
B 5 128 1314 7.77 530 508 103.8
C 1 81 1609 7.84 543 512 139.9
C 1 80 1565 7.53 543 512 139.9
C 3 126 1478 6.91 543 512 139.9
D 6 67 1255 6.23 489 448 129.4
D 10 189 1228 6.03 489 448 129.4
D 7 3 1208 5.87 489 448 129.4

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