ASTROSAT CZTI

Data Quality Report

Orbit 20253

Creation date: 2024-06-27T18:13:04.363429
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_117T01_9000003002_20253cztM0_level2.evt modeM0/AS1A05_117T01_9000003002_20253cztM0_level2_quad_clean.evt
Size (bytes)905,417,280129,533,760
Size863.5 MB 123.5 MB
Events in quadrant A5,958,630803,492
Events in quadrant B6,471,498799,526
Events in quadrant C6,547,265760,632
Events in quadrant D7,661,546759,195

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247392
B0262442
C0266512
D0299942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115622732.361183%
B115633442.975006%
C115632632.274496%
D115637076.114330%

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 13152 11564 13 13 0.10% 0.11%
B 13153 11565 68 68 0.52% 0.59%
C 13153 11565 0 0 0.00% 0.00%
D 13153 11565 435 435 3.31% 3.76%

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 14 111 109098 367.99 1457 1422 292.6
A 10 253 104967 353.88 1457 1422 292.6
A 4 2 74958 251.32 1457 1422 292.6
B 7 220 573519 2110.24 1437 1400 271.1
B 0 197 51332 184.17 1437 1400 271.1
B 0 85 35067 124.18 1437 1400 271.1
C 3 9 783388 2414.67 1386 1392 323.9
C 14 238 216671 664.74 1386 1392 323.9
C 3 233 114453 349.11 1386 1392 323.9
D 1 52 1245927 3701.24 1383 1347 336.3
D 2 16 407637 1208.26 1383 1347 336.3
D 7 238 267886 792.66 1383 1347 336.3

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