ASTROSAT CZTI

Data Quality Report

Orbit 36155

Creation date: 2022-06-06T00:46:17.561776
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/AS1A11_059T08_9000005160_36155cztM0_level2.evt modeM0/AS1A11_059T08_9000005160_36155cztM0_level2_quad_clean.evt
Size (bytes)248,633,28045,472,320
Size237.1 MB 43.4 MB
Events in quadrant A1,482,298293,893
Events in quadrant B1,601,466311,310
Events in quadrant C1,822,934288,380
Events in quadrant D2,421,013272,668

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06376160
B06748176
C07331230
D09452284

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0622
B0624
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A295970.236566%
B2960341.148649%
C2948993.358209%
D29371866.332993%

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 4739 3033 0 0 0.00% 0.00%
B 4739 3035 13 13 0.27% 0.43%
C 4740 3033 66 66 1.39% 2.18%
D 4740 3032 149 149 3.14% 4.91%

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 10 83 89592 1212.17 356 348 73.6
A 9 143 10724 140.93 356 348 73.6
A 13 254 4979 62.9 356 348 73.6
B 5 172 131059 1850.11 358 348 70.6
B 0 190 22402 312.15 358 348 70.6
B 5 255 19969 277.71 358 348 70.6
C 0 207 250161 3085.49 343 345 81.0
C 15 214 122589 1509.84 343 345 81.0
C 0 10 94896 1167.8 343 345 81.0
D 1 52 727585 8788.32 337 328 82.8
D 13 249 104200 1255.21 337 328 82.8
D 2 249 92102 1109.02 337 328 82.8

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