ASTROSAT CZTI

Data Quality Report

Orbit 20200131_A07_100T02_9000003476_level2

Creation date: 2025-12-09T03:04:03.107324
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/AS1A07_100T02_9000003476cztM0_level2.fits modeM0/AS1A07_100T02_9000003476cztM0_level2_quad_clean.evt
Size (bytes)353,597,760360,397,440
Size337.2 MB 343.7 MB
Events in quadrant A2,183,1222,231,489
Events in quadrant B2,088,5322,240,819
Events in quadrant C2,125,1002,094,764
Events in quadrant D1,828,3041,864,821

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07320
B07320
C07360
D07260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0670
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0741920
B0806390
C0850880
D01011300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A361582150.594613%
B361615021.388236%
C3616712963.583377%
D3612524836.873356%

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 42153 35752 0 0 0.00% 0.00%
B 42153 35748 0 0 0.00% 0.00%
C 42153 35747 0 0 0.00% 0.00%
D 42153 35705 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 2152 11.43 568 534 141.6
A 7 110 1693 8.19 568 534 141.6
A 0 30 1658 7.94 568 534 141.6
B 2 9 1672 10.34 553 530 110.4
B 2 8 1466 8.48 553 530 110.4
B 5 255 1421 8.07 553 530 110.4
C 3 126 1490 6.78 561 529 141.8
C 12 241 1482 6.72 561 529 141.8
C 3 187 1454 6.52 561 529 141.8
D 15 46 1365 6.42 522 479 138.0
D 3 14 1357 6.36 522 479 138.0
D 6 231 1264 5.69 522 479 138.0

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