ASTROSAT CZTI

Data Quality Report

Orbit 23721

Creation date: 2024-06-27T18:57:55.132235
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/AS1A07_027T05_9000003506_23721cztM0_level2.evt modeM0/AS1A07_027T05_9000003506_23721cztM0_level2_quad_clean.evt
Size (bytes)155,370,24030,836,160
Size148.2 MB 29.4 MB
Events in quadrant A762,892216,571
Events in quadrant B911,992218,212
Events in quadrant C758,176209,239
Events in quadrant D2,166,222176,265

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032241
B036931
C031801
D074991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A152030.197368%
B152140.262985%
C152190.591716%
D152145429.848784%

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 1520 1520 0 0 0.00% 0.00%
B 1521 1521 1 1 0.07% 0.07%
C 1521 1521 1 1 0.07% 0.07%
D 1521 1521 418 418 27.48% 27.48%

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 13 254 2907 65.04 197 193 41.7
A 0 226 1691 35.9 197 193 41.7
A 3 137 1546 32.42 197 193 41.7
B 0 189 59514 1529.62 196 191 38.8
B 0 229 49255 1265.1 196 191 38.8
B 0 219 12037 305.44 196 191 38.8
C 14 238 29547 645.69 186 186 45.5
C 0 239 2726 55.86 186 186 45.5
C 13 61 1306 24.63 186 186 45.5
D 1 52 1012301 23305.34 169 163 43.4
D 7 238 231230 5320.52 169 163 43.4
D 12 233 226529 5212.27 169 163 43.4

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