ASTROSAT CZTI

Data Quality Report

Orbit 05556

Creation date: 2024-06-27T14:56:37.557571
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/AS1A02_086T01_9000000714_05556cztM0_level2.evt modeM0/AS1A02_086T01_9000000714_05556cztM0_level2_quad_clean.evt
Size (bytes)1,361,580,480224,138,880
Size1.3 GB 213.8 MB
Events in quadrant A9,163,3071,365,551
Events in quadrant B10,545,6731,371,743
Events in quadrant C8,895,8061,375,671
Events in quadrant D11,282,2691,301,571

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0411375
B0439494
C0407694
D0472874

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04060
B04060
C04060
D04060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A199492671.338413%
B199493251.629154%
C199492201.102812%
D199494552.280816%

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 22274 19953 18 18 0.08% 0.09%
B 22274 19953 25 25 0.11% 0.13%
C 22274 19953 0 0 0.00% 0.00%
D 22274 19953 165 165 0.74% 0.83%

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 0 50 130019 267.55 2332 2276 477.5
A 15 174 39770 78.53 2332 2276 477.5
A 0 226 23159 43.74 2332 2276 477.5
B 15 204 913392 2019.27 2353 2293 451.2
B 11 51 150408 328.27 2353 2293 451.2
B 0 182 97336 210.64 2353 2293 451.2
C 1 16 39003 70.0 2266 2278 524.6
C 13 61 18347 30.63 2266 2278 524.6
C 12 4 11342 17.28 2266 2278 524.6
D 2 63 801674 1443.74 2256 2186 553.8
D 2 136 499369 897.83 2256 2186 553.8
D 2 152 436143 783.65 2256 2186 553.8

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