ASTROSAT CZTI

Data Quality Report

Orbit 34268

Creation date: 2022-07-18T16:18:16.785147
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/AS1A11_059T09_9000004888_34268cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34268cztM0_level2_quad_clean.evt
Size (bytes)859,170,240127,702,080
Size819.4 MB 121.8 MB
Events in quadrant A4,828,866799,648
Events in quadrant B7,066,523795,796
Events in quadrant C5,782,554795,497
Events in quadrant D7,632,511748,936

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214890
B0278570
C0238520
D0298790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10503380.361801%
B105035505.236599%
C10503480.457012%
D105032572.446920%

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 13277 10505 23 23 0.17% 0.22%
B 13277 10505 386 386 2.91% 3.67%
C 13277 10505 41 41 0.31% 0.39%
D 13277 10505 201 201 1.51% 1.91%

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 9 143 132794 549.79 1203 1179 239.4
A 10 83 29650 118.93 1203 1179 239.4
A 13 254 17893 69.82 1203 1179 239.4
B 5 172 1832309 8107.54 1175 1144 225.9
B 0 189 250000 1101.82 1175 1144 225.9
B 0 229 174777 768.77 1175 1144 225.9
C 15 214 451976 1686.14 1164 1173 267.4
C 14 67 398728 1486.98 1164 1173 267.4
C 14 254 230985 859.57 1164 1173 267.4
D 8 195 2025331 7145.39 1159 1127 283.3
D 2 250 435257 1532.47 1159 1127 283.3
D 13 249 259941 913.61 1159 1127 283.3

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