ASTROSAT CZTI

Data Quality Report

Orbit 33861

Creation date: 2024-06-27T20:53:25.502662
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_046T03_9000004834_33861cztM0_level2.evt modeM0/AS1A11_046T03_9000004834_33861cztM0_level2_quad_clean.evt
Size (bytes)219,634,56042,292,800
Size209.5 MB 40.3 MB
Events in quadrant A1,282,367277,035
Events in quadrant B1,664,505274,493
Events in quadrant C1,453,861278,616
Events in quadrant D2,072,953264,169

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053062
B065661
C058031
D079801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A258790.347893%
B25871164.483958%
C2587491.894086%
D2587331.275609%

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 4261 2588 2 2 0.05% 0.08%
B 4261 2588 82 82 1.92% 3.17%
C 4261 2588 28 28 0.66% 1.08%
D 4261 2588 22 22 0.52% 0.85%

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 15 169 64658 1020.95 309 303 63.0
A 10 83 5649 84.81 309 303 63.0
A 0 254 5313 79.48 309 303 63.0
B 5 172 301639 5088.25 300 293 59.2
B 0 229 62540 1051.05 300 293 59.2
B 4 232 33250 556.48 300 293 59.2
C 15 214 110790 1569.16 297 299 70.4
C 0 10 75755 1071.61 297 299 70.4
C 3 233 52342 739.1 297 299 70.4
D 8 195 624911 7822.22 295 289 79.9
D 1 52 60529 754.39 295 289 79.9
D 13 249 48466 603.33 295 289 79.9

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