ASTROSAT CZTI

Data Quality Report

Orbit 34468

Creation date: 2022-02-12T01:05:11.498140
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/AS1A10_058T06_9000004920_34468cztM0_level2.evt modeM0/AS1A10_058T06_9000004920_34468cztM0_level2_quad_clean.evt
Size (bytes)188,104,32021,035,520
Size179.4 MB 20.1 MB
Events in quadrant A1,010,713139,494
Events in quadrant B932,930140,123
Events in quadrant C1,010,129136,286
Events in quadrant D2,626,83696,891

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040641
B037711
C040191
D090201

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1676402.386635%
B1676181.073986%
C1676160.954654%
D167658034.606205%

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 1676 1676 27 27 1.61% 1.61%
B 1676 1676 12 12 0.72% 0.72%
C 1676 1676 14 14 0.84% 0.84%
D 1676 1676 558 558 33.29% 33.29%

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 15 169 169209 3831.46 209 206 44.1
A 10 83 17718 397.01 209 206 44.1
A 13 6 7207 158.72 209 206 44.1
B 5 172 61912 1478.72 209 205 41.7
B 4 232 20075 476.15 209 205 41.7
B 0 229 13881 327.72 209 205 41.7
C 15 214 72701 1517.47 200 201 47.8
C 15 208 62263 1299.0 200 201 47.8
C 0 10 57970 1209.14 200 201 47.8
D 7 223 1440236 29555.57 175 171 48.7
D 8 195 278744 5717.37 175 171 48.7
D 2 249 54164 1108.14 175 171 48.7

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