ASTROSAT CZTI

Data Quality Report

Orbit 23421

Creation date: 2024-06-27T18:54:09.570596
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/AS1A07_127T02_9000003460_23421cztM0_level2.evt modeM0/AS1A07_127T02_9000003460_23421cztM0_level2_quad_clean.evt
Size (bytes)210,813,12066,997,440
Size201.0 MB 63.9 MB
Events in quadrant A1,534,403470,592
Events in quadrant B1,565,868475,209
Events in quadrant C1,507,964435,480
Events in quadrant D1,573,547437,051

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064210
B064960
C062710
D065060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A295740.135272%
B295760.202908%
C295760.202908%
D295730.101454%

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 2957 2957 0 0 0.00% 0.00%
B 2957 2957 2 2 0.07% 0.07%
C 2957 2957 0 0 0.00% 0.00%
D 2957 2957 3 3 0.10% 0.10%

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 13 254 4352 50.01 398 391 79.2
A 0 226 3522 39.53 398 391 79.2
A 3 137 3020 33.19 398 391 79.2
B 0 189 20399 273.15 391 383 73.3
B 0 190 13430 178.05 391 383 73.3
B 12 111 8078 105.01 391 383 73.3
C 14 238 59660 699.91 364 367 84.7
C 10 9 25698 299.02 364 367 84.7
C 13 61 2601 26.37 364 367 84.7
D 1 52 79010 839.63 380 370 93.7
D 12 227 40412 427.53 380 370 93.7
D 2 234 13318 138.24 380 370 93.7

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