ASTROSAT CZTI

Data Quality Report

Orbit 20170606_A03_033T01_9000001276_level2

Creation date: 2025-11-14T00:56:11.083907
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/AS1A03_033T01_9000001276cztM0_level2.fits modeM0/AS1A03_033T01_9000001276cztM0_level2_quad_clean.evt
Size (bytes)155,188,800164,557,440
Size148.0 MB 156.9 MB
Events in quadrant A915,5801,003,748
Events in quadrant B889,208990,122
Events in quadrant C913,408950,069
Events in quadrant D778,896836,747

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0421180
B0368390
C0355080
D0460680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03520
B03520
C03520
D03520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A174482591.484411%
B174531771.014152%
C174541230.704710%
D1745311596.640692%

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 19776 17451 0 0 0.00% 0.00%
B 19776 17453 0 0 0.00% 0.00%
C 19776 17453 0 0 0.00% 0.00%
D 19776 17449 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 29 961 11.81 238 223 62.5
A 7 110 785 8.99 238 223 62.5
A 0 30 756 8.53 238 223 62.5
B 2 9 783 11.42 235 223 49.0
B 3 17 646 8.62 235 223 49.0
B 14 254 610 7.89 235 223 49.0
C 3 158 666 6.83 241 222 65.0
C 2 191 657 6.69 241 222 65.0
C 12 241 634 6.34 241 222 65.0
D 3 14 592 6.41 221 202 60.9
D 6 67 567 6.0 221 202 60.9
D 1 19 563 5.93 221 202 60.9

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