ASTROSAT CZTI

Data Quality Report

Orbit 20669

Creation date: 2024-06-27T18:18:09.850658
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_229T02_9000003060_20669cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20669cztM0_level2_quad_clean.evt
Size (bytes)790,427,520192,579,840
Size753.8 MB 183.7 MB
Events in quadrant A5,541,5071,311,407
Events in quadrant B6,014,4741,310,197
Events in quadrant C5,447,3881,262,681
Events in quadrant D6,245,6471,243,337

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228812
B0244912
C0226792
D0249553

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A101881621.590106%
B101892332.286780%
C101892082.041417%
D101882862.807224%

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 12758 10189 10 10 0.08% 0.10%
B 12759 10191 57 57 0.45% 0.56%
C 12759 10190 2 2 0.02% 0.02%
D 12758 10189 139 139 1.09% 1.36%

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 80418 286.22 1390 1369 276.2
A 5 16 63987 226.73 1390 1369 276.2
A 13 252 36695 127.91 1390 1369 276.2
B 7 220 532317 2096.05 1363 1335 253.3
B 3 64 40680 155.31 1363 1335 253.3
B 12 111 28530 107.35 1363 1335 253.3
C 14 238 208541 689.76 1306 1319 300.4
C 8 208 94648 310.65 1306 1319 300.4
C 7 247 22361 70.04 1306 1319 300.4
D 1 20 853032 2679.27 1337 1302 317.9
D 13 153 120325 374.41 1337 1302 317.9
D 1 52 75767 234.24 1337 1302 317.9

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