ASTROSAT CZTI

Data Quality Report

Orbit 40668

Creation date: 2024-06-27T22:18:55.742241
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/AS1A12_029T02_9000005558_40668cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40668cztM0_level2_quad_clean.evt
Size (bytes)459,371,52089,043,840
Size438.1 MB 84.9 MB
Events in quadrant A3,323,933646,360
Events in quadrant B3,420,194651,005
Events in quadrant C5,779,935563,852
Events in quadrant D4,016,713418,926

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134103
B0140142
C0212012
D0162802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5947190.319489%
B59471542.589541%
C594774012.443249%
D5947177029.762906%

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 7290 5948 4 4 0.05% 0.07%
B 7290 5948 98 98 1.34% 1.65%
C 7290 5948 731 731 10.03% 12.29%
D 7289 5947 283 283 3.88% 4.76%

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 10 83 531369 3891.58 658 644 136.4
A 12 189 197613 1444.29 658 644 136.4
A 2 79 25073 179.13 658 644 136.4
B 0 229 431654 3427.92 646 628 125.7
B 4 171 172216 1364.63 646 628 125.7
B 5 255 95722 756.28 646 628 125.7
C 9 187 3057465 21536.91 604 606 141.9
C 15 214 248046 1743.32 604 606 141.9
C 14 254 47691 331.73 604 606 141.9
D 12 227 1168409 9096.85 507 491 128.4
D 12 191 310258 2412.76 507 491 128.4
D 2 250 253481 1970.52 507 491 128.4

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