ASTROSAT CZTI

Data Quality Report

Orbit 34874

Creation date: 2022-03-11T11:33:02.709497
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/AS1C07_005T01_9000004992_34874cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34874cztM0_level2_quad_clean.evt
Size (bytes)444,565,440102,700,800
Size424.0 MB 97.9 MB
Events in quadrant A2,886,036692,296
Events in quadrant B3,120,025701,424
Events in quadrant C2,956,812693,504
Events in quadrant D4,133,610644,581

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120353
B0127532
C0118412
D0159032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5417991.827580%
B54171212.233709%
C5417581.070703%
D54171572.898283%

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 7241 5418 78 78 1.08% 1.44%
B 7241 5418 93 93 1.28% 1.72%
C 7241 5418 49 49 0.68% 0.90%
D 7241 5418 139 139 1.92% 2.57%

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 15 237 321769 2587.12 625 612 124.1
A 15 169 76806 613.79 625 612 124.1
A 10 83 54053 430.5 625 612 124.1
B 5 172 400925 3436.08 619 602 116.5
B 5 31 90921 775.23 619 602 116.5
B 4 171 42861 362.72 619 602 116.5
C 15 214 237266 1679.9 613 618 140.9
C 0 10 164992 1166.85 613 618 140.9
C 0 207 129111 912.14 613 618 140.9
D 8 195 702189 4783.48 604 587 146.7
D 13 249 364464 2480.89 604 587 146.7
D 2 31 282735 1923.67 604 587 146.7

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