ASTROSAT CZTI

Data Quality Report

Orbit 27956

Creation date: 2024-06-27T19:46:23.201557
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_016T01_9000004034_27956cztM0_level2.evt modeM0/AS1A10_016T01_9000004034_27956cztM0_level2_quad_clean.evt
Size (bytes)171,924,48012,703,680
Size164.0 MB 12.1 MB
Events in quadrant A857,14165,991
Events in quadrant B1,747,78465,090
Events in quadrant C866,00063,760
Events in quadrant D1,615,97661,885

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035220
B064190
C035350
D060510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172820.115741%
B172819010.995370%
C1729201.156738%
D17291398.039329%

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 1728 1728 1 1 0.06% 0.06%
B 1728 1728 91 91 5.27% 5.27%
C 1729 1729 0 0 0.00% 0.00%
D 1729 1729 127 127 7.35% 7.35%

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 13 248 8067 168.07 219 214 46.7
A 13 254 3236 64.68 219 214 46.7
A 3 137 1996 38.14 219 214 46.7
B 10 245 889553 20790.16 212 207 42.8
B 0 230 10518 241.04 212 207 42.8
B 12 111 4918 110.13 212 207 42.8
C 14 238 34520 664.49 211 211 51.6
C 15 208 5861 109.43 211 211 51.6
C 13 61 1423 23.47 211 211 51.6
D 1 52 409756 7722.41 209 203 53.0
D 8 195 128470 2418.56 209 203 53.0
D 7 80 104213 1961.18 209 203 53.0

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