ASTROSAT CZTI

Data Quality Report

Orbit 55095

Creation date: 2025-12-04T06:06:24.391500
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_025T01_9000006530_55095cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55095cztM0_level2_quad_clean.evt
Size (bytes)474,367,68099,164,160
Size452.4 MB 94.6 MB
Events in quadrant A2,930,828669,292
Events in quadrant B3,105,874716,623
Events in quadrant C4,865,051618,696
Events in quadrant D6,152,162544,064

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135896
B0140342
C0189856
D0229679

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6510300.460829%
B6512560.859951%
C65112173.332821%
D651178011.979727%

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 7572 6513 12 12 0.16% 0.18%
B 7572 6513 5 5 0.07% 0.08%
C 7572 6513 142 142 1.88% 2.18%
D 7572 6513 795 795 10.50% 12.21%

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 4 3 60428 332.16 720 704 179.8
A 8 62 33303 181.3 720 704 179.8
A 3 61 25535 138.1 720 704 179.8
B 4 21 222904 1416.65 715 690 156.9
B 10 247 23700 146.69 715 690 156.9
B 12 111 18776 115.3 715 690 156.9
C 3 242 1400390 7309.16 692 687 191.5
C 6 223 290353 1512.62 692 687 191.5
C 13 3 279816 1457.59 692 687 191.5
D 15 94 2235790 11684.58 664 634 191.3
D 6 239 570008 2976.48 664 634 191.3
D 9 1 140280 730.02 664 634 191.3

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