ASTROSAT CZTI

Data Quality Report

Orbit 28502

Creation date: 2024-06-27T19:52:25.331279
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_110T05_9000004098_28502cztM0_level2.evt modeM0/AS1A10_110T05_9000004098_28502cztM0_level2_quad_clean.evt
Size (bytes)255,110,40050,932,800
Size243.3 MB 48.6 MB
Events in quadrant A1,643,758346,097
Events in quadrant B1,423,186358,564
Events in quadrant C1,432,747346,568
Events in quadrant D3,051,212307,249

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066211
B058491
C059211
D0108571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2561863.358063%
B2561873.397111%
C25611194.646622%
D256159023.037876%

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 3881 2561 3 3 0.08% 0.12%
B 3881 2561 0 0 0.00% 0.00%
C 3881 2561 0 0 0.00% 0.00%
D 3880 2560 346 346 8.92% 13.52%

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 255480 3555.56 357 352 71.8
A 8 192 5344 69.57 357 352 71.8
A 13 254 4467 57.35 357 352 71.8
B 0 230 19182 279.99 356 348 67.3
B 12 111 7887 112.07 356 348 67.3
B 11 111 7181 101.58 356 348 67.3
C 14 238 56985 706.59 348 351 80.2
C 7 247 6759 79.95 348 351 80.2
C 3 233 5171 60.14 348 351 80.2
D 1 52 1512723 19066.85 331 323 79.3
D 8 195 170679 2147.68 331 323 79.3
D 2 250 69280 869.34 331 323 79.3

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