ASTROSAT CZTI

Data Quality Report

Orbit 19466

Creation date: 2024-06-27T18:03:11.040328
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/AS1A05_229T02_9000002890_19466cztM0_level2.evt modeM0/AS1A05_229T02_9000002890_19466cztM0_level2_quad_clean.evt
Size (bytes)2,093,716,800336,925,440
Size1.9 GB 321.3 MB
Events in quadrant A13,559,2422,147,720
Events in quadrant B13,655,5512,184,551
Events in quadrant C14,056,8082,109,826
Events in quadrant D20,310,6091,900,177

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0573405
B0574906
C0580845
D0778255

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05500
B05500
C05500
D05500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A270851580.583349%
B270852540.937788%
C270853081.137161%
D2708518536.841425%

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 31771 27089 36 36 0.11% 0.13%
B 31771 27089 74 74 0.23% 0.27%
C 31771 27089 6 6 0.02% 0.02%
D 31771 27088 1572 1572 4.95% 5.80%

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 5 16 466388 691.57 3337 3267 669.7
A 3 1 79176 113.35 3337 3267 669.7
A 4 2 65505 92.94 3337 3267 669.7
B 6 36 186205 292.48 3311 3225 625.6
B 7 220 159105 249.17 3311 3225 625.6
B 0 190 87975 135.47 3311 3225 625.6
C 9 221 589633 781.76 3223 3246 750.1
C 14 238 498852 660.73 3223 3246 750.1
C 3 233 336054 443.69 3223 3246 750.1
D 1 52 7283316 9636.66 3127 3042 755.5
D 12 225 986800 1302.17 3127 3042 755.5
D 2 234 117875 152.0 3127 3042 755.5

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