ASTROSAT CZTI

Data Quality Report

Orbit 37405

Creation date: 2024-06-27T21:39:35.598427
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/AS1A09_002T01_9000005322_37405cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37405cztM0_level2_quad_clean.evt
Size (bytes)444,150,72084,934,080
Size423.6 MB 81.0 MB
Events in quadrant A2,740,412558,044
Events in quadrant B2,639,353574,385
Events in quadrant C2,908,678571,926
Events in quadrant D4,826,886520,321

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109273
B0106942
C0113922
D0177329

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4949130.262679%
B4949240.484946%
C4949591.192160%
D49482805.658852%

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 7072 4950 4 4 0.06% 0.08%
B 7072 4950 9 9 0.13% 0.18%
C 7072 4950 51 51 0.72% 1.03%
D 7072 4950 268 268 3.79% 5.41%

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 272038 2220.97 622 611 122.2
A 12 189 13444 105.01 622 611 122.2
A 15 222 13120 102.36 622 611 122.2
B 5 172 85893 742.96 620 606 114.8
B 0 190 29306 250.01 620 606 114.8
B 0 229 23986 203.67 620 606 114.8
C 15 214 211908 1513.38 616 622 139.6
C 0 10 145725 1039.33 616 622 139.6
C 14 254 54998 389.48 616 622 139.6
D 1 52 786996 5350.84 605 589 147.0
D 12 227 674744 4587.06 605 589 147.0
D 2 249 269953 1832.8 605 589 147.0

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