ASTROSAT CZTI

Data Quality Report

Orbit 11993

Creation date: 2024-06-27T16:21:00.758821
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/AS1A04_082T01_9000001772_11993cztM0_level2.evt modeM0/AS1A04_082T01_9000001772_11993cztM0_level2_quad_clean.evt
Size (bytes)1,357,427,520227,540,160
Size1.3 GB 217.0 MB
Events in quadrant A9,799,7901,416,861
Events in quadrant B11,538,0931,409,399
Events in quadrant C8,339,7151,417,498
Events in quadrant D10,171,2471,361,788

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0414845
B0461174
C0382674
D0419984

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186674622.474956%
B186678884.757058%
C186672601.392832%
D186674132.212460%

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 21053 18668 58 58 0.28% 0.31%
B 21053 18668 433 433 2.06% 2.32%
C 21053 18669 2 2 0.01% 0.01%
D 21053 18668 147 147 0.70% 0.79%

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 1 162 485712 1094.3 2177 2127 441.9
A 1 178 263584 591.65 2177 2127 441.9
A 1 161 229495 514.51 2177 2127 441.9
B 4 239 2039460 4910.31 2168 2114 414.9
B 11 51 358043 857.84 2168 2114 414.9
B 3 64 310565 743.41 2168 2114 414.9
C 14 234 16982 30.04 2134 2134 494.3
C 13 61 15668 27.38 2134 2134 494.3
C 7 247 7318 10.49 2134 2134 494.3
D 1 52 897906 1761.55 2114 2048 508.6
D 8 195 648508 1271.15 2114 2048 508.6
D 13 104 162592 315.68 2114 2048 508.6

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