ASTROSAT CZTI

Data Quality Report

Orbit 12818

Creation date: 2024-06-27T16:32:43.073221
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/AS1G08_071T01_9000001888_12818cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12818cztM0_level2_quad_clean.evt
Size (bytes)1,269,334,080248,944,320
Size1.2 GB 237.4 MB
Events in quadrant A8,934,5731,562,849
Events in quadrant B10,580,8821,561,635
Events in quadrant C8,489,2621,583,838
Events in quadrant D9,146,6611,517,252

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0395455
B0442284
C0389164
D0410884

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A190671700.891593%
B190677043.692243%
C190671340.702785%
D190671921.006975%

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 21444 19073 0 0 0.00% 0.00%
B 21444 19073 303 303 1.41% 1.59%
C 21444 19073 0 0 0.00% 0.00%
D 21444 19073 87 87 0.41% 0.46%

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 12 189 260888 571.29 2231 2178 452.8
A 15 222 92863 200.25 2231 2178 452.8
A 0 226 19889 39.11 2231 2178 452.8
B 4 239 1294611 3059.75 2205 2150 422.4
B 0 219 416999 982.11 2205 2150 422.4
B 0 214 85540 197.42 2205 2150 422.4
C 13 61 15769 27.0 2171 2178 503.3
C 8 128 14144 23.78 2171 2178 503.3
C 14 234 8817 13.19 2171 2178 503.3
D 8 195 413785 788.24 2159 2096 522.3
D 1 52 328090 624.17 2159 2096 522.3
D 13 172 87146 162.84 2159 2096 522.3

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