ASTROSAT CZTI

Data Quality Report

Orbit 46373

Creation date: 2024-06-27T23:22:21.592275
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/AS1A13_068T02_9000006200_46373cztM0_level2.fits modeM0/AS1A13_068T02_9000006200_46373cztM0_level2_quad_clean.evt
Size (bytes)504,106,560113,990,400
Size480.8 MB 108.7 MB
Events in quadrant A6,207,982772,039
Events in quadrant B3,971,589793,982
Events in quadrant C3,684,164760,912
Events in quadrant D4,294,556673,385

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223243
B0159383
C0152304
D0169413

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64723335.145241%
B64723325.129790%
C64711592.457116%
D64713906.026889%

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 7652 6474 28 28 0.37% 0.43%
B 7652 6474 158 158 2.06% 2.44%
C 7651 6473 45 45 0.59% 0.70%
D 7651 6473 204 204 2.67% 3.15%

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 10 83 3023714 18206.71 797 781 166.0
A 2 79 61852 367.82 797 781 166.0
A 13 248 19914 115.24 797 781 166.0
B 15 201 404381 2611.92 786 760 154.5
B 4 171 256706 1656.28 786 760 154.5
B 5 255 121482 781.22 786 760 154.5
C 14 254 560239 3106.48 775 781 180.1
C 12 249 28965 156.5 775 781 180.1
C 1 3 23330 125.21 775 781 180.1
D 5 235 547128 2852.2 771 751 191.6
D 1 52 328681 1711.86 771 751 191.6
D 13 249 252134 1312.27 771 751 191.6

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