ASTROSAT CZTI

Data Quality Report

Orbit 12127

Creation date: 2024-06-27T16:22:45.181136
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/AS1G08_065T01_9000001796_12127cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12127cztM0_level2_quad_clean.evt
Size (bytes)4,148,608,320678,075,840
Size3.9 GB 646.7 MB
Events in quadrant A29,959,8894,289,576
Events in quadrant B35,563,1914,234,221
Events in quadrant C24,125,7674,282,054
Events in quadrant D32,436,5344,109,817

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012555711
B014083610
C010887110
D013138610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010700
B010700
C010700
D010700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5280613162.492141%
B5280626415.001326%
C528063010.570011%
D5280612122.295194%

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 59597 52813 443 443 0.74% 0.84%
B 59597 52816 1199 1199 2.01% 2.27%
C 59597 52817 20 20 0.03% 0.04%
D 59597 52817 690 690 1.16% 1.31%

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 14 63 1678749 1322.12 6300 6158 1265.1
A 13 248 1534299 1207.93 6300 6158 1265.1
A 1 162 928183 728.82 6300 6158 1265.1
B 4 239 7711271 6600.4 6222 6072 1167.4
B 15 204 867711 738.09 6222 6072 1167.4
B 11 51 806467 685.63 6222 6072 1167.4
C 15 208 190135 130.42 6129 6145 1410.8
C 14 234 49525 30.75 6129 6145 1410.8
C 13 61 44714 27.34 6129 6145 1410.8
D 1 52 4567191 3121.69 6083 5911 1461.2
D 8 195 1807473 1232.97 6083 5911 1461.2
D 13 104 663040 449.73 6083 5911 1461.2

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