ASTROSAT CZTI

Data Quality Report

Orbit 20200113_C05_002T02_9000003432_level2

Creation date: 2025-12-08T05:39:30.763172
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/AS1C05_002T02_9000003432cztM0_level2.fits modeM0/AS1C05_002T02_9000003432cztM0_level2_quad_clean.evt
Size (bytes)90,587,52081,547,200
Size86.4 MB 77.8 MB
Events in quadrant A557,066472,702
Events in quadrant B541,170481,592
Events in quadrant C521,596429,470
Events in quadrant D445,322407,164

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02000
C02020
D02040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200020
B0203480
C0305010
D0296220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9782370.378246%
B9788840.858194%
C97657457.629288%
D973899610.227973%

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 12958 9844 0 0 0.00% 0.00%
B 12958 9847 0 0 0.00% 0.00%
C 12958 9826 0 0 0.00% 0.00%
D 12958 9775 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 29 566 11.37 144 136 37.8
A 9 19 440 8.04 144 136 37.8
A 0 30 428 7.72 144 136 37.8
B 2 9 435 9.9 142 135 30.3
B 5 128 375 7.92 142 135 30.3
B 3 17 373 7.85 142 135 30.3
C 12 241 392 7.1 137 128 37.2
C 9 209 365 6.37 137 128 37.2
C 3 187 361 6.27 137 128 37.2
D 15 46 362 6.79 127 115 36.4
D 3 31 352 6.51 127 115 36.4
D 6 231 328 5.85 127 115 36.4

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