ASTROSAT CZTI

Data Quality Report

Orbit 21293

Creation date: 2024-06-27T18:26:01.645902
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/AS1T03_140T01_9000003142_21293cztM0_level2.evt modeM0/AS1T03_140T01_9000003142_21293cztM0_level2_quad_clean.evt
Size (bytes)857,113,920153,832,320
Size817.4 MB 146.7 MB
Events in quadrant A5,385,6611,028,513
Events in quadrant B5,716,5861,022,708
Events in quadrant C5,221,816983,195
Events in quadrant D8,929,484903,253

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225453
B0235183
C0220203
D0335833

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A104031921.845621%
B104032932.816495%
C104022452.355316%
D104029729.344357%

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 13038 10404 15 15 0.12% 0.14%
B 13038 10404 88 88 0.67% 0.85%
C 13037 10403 0 0 0.00% 0.00%
D 13037 10403 872 872 6.69% 8.38%

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 5 16 66819 241.65 1361 1338 271.0
A 15 236 35474 125.97 1361 1338 271.0
A 9 143 33872 120.06 1361 1338 271.0
B 3 64 202821 803.72 1340 1312 250.7
B 0 189 162080 641.22 1340 1312 250.7
B 0 229 32745 125.37 1340 1312 250.7
C 14 238 205565 693.66 1278 1289 294.5
C 3 233 23428 75.18 1278 1289 294.5
C 0 10 13408 41.15 1278 1289 294.5
D 7 38 2924949 9500.96 1270 1234 307.7
D 1 52 530464 1719.8 1270 1234 307.7
D 12 235 242499 784.02 1270 1234 307.7

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