ASTROSAT CZTI

Data Quality Report

Orbit 20160519_G05_211T01_9000000464_level2

Creation date: 2025-10-29T18:05:21.765476
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/AS1G05_211T01_9000000464cztM0_level2.fits modeM0/AS1G05_211T01_9000000464cztM0_level2_quad_clean.evt
Size (bytes)996,298,5601,027,296,000
Size950.1 MB 979.7 MB
Events in quadrant A5,899,8866,114,227
Events in quadrant B5,727,6506,120,381
Events in quadrant C5,685,9965,658,356
Events in quadrant D5,078,6365,444,241

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310
B01310
C01310
D01310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02598340
B02566000
C02970670
D02410290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023040
B023040
C023040
D023040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11344832462.861223%
B11344824632.171039%
C11344870676.229286%
D11344717231.518771%

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 126713 113435 0 0 0.00% 0.00%
B 126713 113439 0 0 0.00% 0.00%
C 126713 113007 0 0 0.00% 0.00%
D 126713 113412 0 0 0.00% 0.00%

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 29 5814 10.96 1533 1421 400.7
A 14 188 5630 10.51 1533 1421 400.7
A 7 110 5120 9.23 1533 1421 400.7
B 2 9 4925 11.24 1513 1429 311.0
B 12 226 4213 8.95 1513 1429 311.0
B 14 254 3901 7.95 1513 1429 311.0
C 1 80 4149 6.94 1503 1382 399.0
C 1 81 4056 6.7 1503 1382 399.0
C 12 241 3954 6.45 1503 1382 399.0
D 11 82 4553 8.32 1451 1312 389.5
D 6 231 3821 6.44 1451 1312 389.5
D 3 14 3757 6.28 1451 1312 389.5

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