ASTROSAT CZTI

Data Quality Report

Orbit 25246

Creation date: 2024-06-27T19:15:27.830695
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/AS1A07_097T01_9000003692_25246cztM0_level2.evt modeM0/AS1A07_097T01_9000003692_25246cztM0_level2_quad_clean.evt
Size (bytes)2,357,758,080318,934,080
Size2.2 GB 304.2 MB
Events in quadrant A13,777,5572,058,362
Events in quadrant B13,873,0302,063,636
Events in quadrant C21,750,7311,871,712
Events in quadrant D20,293,3931,916,670

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0559290
B0560830
C0809090
D0783880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A254184491.766465%
B254194851.908022%
C25419358614.107557%
D2541812594.953183%

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 31578 25423 0 0 0.00% 0.00%
B 31579 25424 1 1 0.00% 0.00%
C 31579 25424 2325 2325 7.36% 9.14%
D 31578 25423 584 584 1.85% 2.30%

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 3 1 49429 65.45 3558 3493 701.9
A 13 254 40822 53.19 3558 3493 701.9
A 0 226 30943 39.11 3558 3493 701.9
B 0 190 136653 204.85 3497 3429 650.4
B 12 111 77678 114.17 3497 3429 650.4
B 11 111 69020 100.85 3497 3429 650.4
C 0 239 7216157 9629.52 3235 3264 749.0
C 2 16 930911 1238.45 3235 3264 749.0
C 14 238 518248 687.53 3235 3264 749.0
D 8 195 3216061 3919.98 3421 3335 819.6
D 10 70 1316234 1601.92 3421 3335 819.6
D 9 35 979384 1190.92 3421 3335 819.6

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