ASTROSAT CZTI

Data Quality Report

Orbit 16150

Creation date: 2024-06-27T17:18:38.907521
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/AS1T02_092T01_9000002384_16150cztM0_level2.evt modeM0/AS1T02_092T01_9000002384_16150cztM0_level2_quad_clean.evt
Size (bytes)734,748,480127,477,440
Size700.7 MB 121.6 MB
Events in quadrant A5,327,046803,846
Events in quadrant B5,456,978800,152
Events in quadrant C5,357,128763,860
Events in quadrant D5,390,880756,929

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229511
B0232361
C0226601
D0235201

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10619780.734532%
B10619680.640362%
C10619860.809869%
D106191631.534984%

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 11130 10621 21 21 0.19% 0.20%
B 11130 10621 7 7 0.06% 0.07%
C 11130 10621 0 0 0.00% 0.00%
D 11130 10621 106 106 0.95% 1.00%

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 15 174 469377 1863.01 1251 1226 251.3
A 0 253 18353 68.16 1251 1226 251.3
A 0 226 11023 38.99 1251 1226 251.3
B 5 65 127332 522.03 1248 1217 241.6
B 0 189 107688 440.71 1248 1217 241.6
B 4 216 74750 304.37 1248 1217 241.6
C 3 233 453394 1609.27 1193 1200 281.0
C 14 238 181812 642.76 1193 1200 281.0
C 3 9 37536 129.31 1193 1200 281.0
D 1 52 422733 1420.03 1213 1175 296.9
D 7 38 199695 668.72 1213 1175 296.9
D 13 168 63402 209.61 1213 1175 296.9

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