ASTROSAT CZTI

Data Quality Report

Orbit 34500

Creation date: 2022-02-14T05:26:35.491526
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_156T01_9000004928_34500cztM0_level2.evt modeM0/AS1A05_156T01_9000004928_34500cztM0_level2_quad_clean.evt
Size (bytes)536,978,88084,945,600
Size512.1 MB 81.0 MB
Events in quadrant A3,010,518538,140
Events in quadrant B4,433,558537,702
Events in quadrant C3,205,718540,506
Events in quadrant D5,176,447507,119

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133233
B0175932
C0135102
D0198742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6435130.202020%
B64355348.298368%
C6435210.326340%
D64352413.745144%

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 9090 6437 2 2 0.02% 0.03%
B 9090 6437 326 326 3.59% 5.06%
C 9090 6437 11 11 0.12% 0.17%
D 9090 6437 210 210 2.31% 3.26%

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 39134 256.09 747 734 149.9
A 9 143 26895 174.47 747 734 149.9
A 15 169 21984 141.72 747 734 149.9
B 5 172 1111400 8112.39 714 696 136.9
B 4 171 300109 2186.86 714 696 136.9
B 0 189 88896 644.2 714 696 136.9
C 15 214 272876 1623.75 724 730 167.6
C 0 10 53699 316.04 724 730 167.6
C 14 67 21748 125.4 724 730 167.6
D 8 195 1010464 5293.07 710 698 190.8
D 2 250 556757 2914.79 710 698 190.8
D 10 204 261133 1365.17 710 698 190.8

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