ASTROSAT CZTI

Data Quality Report

Orbit 19972

Creation date: 2024-06-27T18:09:34.153201
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/AS1C04_005T01_9000002976_19972cztM0_level2.evt modeM0/AS1C04_005T01_9000002976_19972cztM0_level2_quad_clean.evt
Size (bytes)1,384,364,160113,719,680
Size1.3 GB 108.5 MB
Events in quadrant A21,796,965399,274
Events in quadrant B5,637,146795,871
Events in quadrant C5,704,174746,091
Events in quadrant D8,052,618745,900

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0723432
B0232472
C0235223
D0310612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10908768370.434543%
B109091161.063342%
C109081981.815182%
D109087456.829850%

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 13107 10907 6579 6579 50.19% 60.32%
B 13109 10909 11 11 0.08% 0.10%
C 13108 10908 10 10 0.08% 0.09%
D 13108 10908 669 669 5.10% 6.13%

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 14 238 18721754 119533.89 784 768 156.6
A 14 254 38473 240.74 784 768 156.6
A 10 253 7416 42.44 784 768 156.6
B 7 220 136544 518.48 1383 1352 260.7
B 4 171 35420 130.66 1383 1352 260.7
B 12 111 31462 115.48 1383 1352 260.7
C 14 238 210073 678.19 1323 1336 307.8
C 3 233 191277 617.12 1323 1336 307.8
C 9 221 131413 422.62 1323 1336 307.8
D 7 238 2518050 7840.94 1333 1295 321.0
D 1 52 462391 1436.54 1333 1295 321.0
D 2 234 40760 122.95 1333 1295 321.0

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