ASTROSAT CZTI

Data Quality Report

Orbit 28597

Creation date: 2024-06-27T19:53:49.998710
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_045T06_9000004108_28597cztM0_level2.evt modeM0/AS1A10_045T06_9000004108_28597cztM0_level2_quad_clean.evt
Size (bytes)1,507,219,200235,347,840
Size1.4 GB 224.4 MB
Events in quadrant A10,162,5911,449,596
Events in quadrant B11,644,6011,469,923
Events in quadrant C9,621,1111,437,559
Events in quadrant D12,877,8631,403,407

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0434734
B0476694
C0413334
D0521434

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04040
B04040
C04040
D04040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A198572621.319434%
B198587113.580421%
C198583001.510726%
D198573341.682026%

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 22592 19858 73 73 0.32% 0.37%
B 22593 19859 317 317 1.40% 1.60%
C 22593 19859 3 3 0.01% 0.02%
D 22592 19858 191 191 0.85% 0.96%

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 15 174 660671 1359.86 2418 2370 484.1
A 12 16 121357 245.79 2418 2370 484.1
A 12 194 38262 74.14 2418 2370 484.1
B 10 245 2008497 4398.04 2389 2325 456.2
B 10 247 98107 209.98 2389 2325 456.2
B 4 171 71947 152.63 2389 2325 456.2
C 14 238 392377 715.64 2326 2342 545.0
C 7 247 114409 205.62 2326 2342 545.0
C 14 254 32793 55.87 2326 2342 545.0
D 1 52 1839404 3262.63 2345 2285 563.1
D 8 195 1807772 3206.45 2345 2285 563.1
D 2 250 257023 452.4 2345 2285 563.1

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