ASTROSAT CZTI

Data Quality Report

Orbit 19534

Creation date: 2024-06-27T18:03:47.335319
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/AS1A05_101T05_9000002902_19534cztM0_level2.evt modeM0/AS1A05_101T05_9000002902_19534cztM0_level2_quad_clean.evt
Size (bytes)839,658,240196,908,480
Size800.8 MB 187.8 MB
Events in quadrant A5,443,5711,316,009
Events in quadrant B5,745,1631,322,028
Events in quadrant C6,084,9401,257,736
Events in quadrant D7,336,8141,232,561

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244172
B0249882
C0256002
D0302602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12087420.347481%
B12087870.719782%
C12087980.810788%
D120864994.128744%

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 13512 12089 0 0 0.00% 0.00%
B 13512 12089 18 18 0.13% 0.15%
C 13512 12089 2 2 0.01% 0.02%
D 13511 12088 350 350 2.59% 2.90%

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 15250 48.61 1410 1379 285.4
A 0 226 12257 38.12 1410 1379 285.4
A 3 137 11223 34.5 1410 1379 285.4
B 7 220 56059 206.21 1401 1365 265.2
B 0 198 35824 129.92 1401 1365 265.2
B 0 197 34705 125.7 1401 1365 265.2
C 3 233 580129 1847.43 1346 1353 313.3
C 14 238 210002 666.0 1346 1353 313.3
C 10 223 17986 53.09 1346 1353 313.3
D 12 218 1623408 4891.85 1351 1310 331.6
D 12 233 128480 383.51 1351 1310 331.6
D 1 52 117145 349.33 1351 1310 331.6

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