ASTROSAT CZTI

Data Quality Report

Orbit 50699

Creation date: 2025-02-11T07:21:03.072955
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/AS1T05_241T01_9000006446_50699cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50699cztM0_level2_quad_clean.evt
Size (bytes)613,863,36098,893,440
Size585.4 MB 94.3 MB
Events in quadrant A7,289,386576,890
Events in quadrant B3,903,977719,217
Events in quadrant C5,409,268628,096
Events in quadrant D5,569,915575,236

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265192
B0167712
C0210092
D0218242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7107116216.350077%
B71071812.546785%
C71074366.134797%
D71075187.288589%

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 7877 7108 1235 1235 15.68% 17.37%
B 7877 7108 60 60 0.76% 0.84%
C 7877 7108 323 323 4.10% 4.54%
D 7877 7108 431 431 5.47% 6.06%

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 12 80 3391954 18972.76 721 704 178.7
A 4 3 294329 1642.72 721 704 178.7
A 3 114 100179 556.52 721 704 178.7
B 0 229 317769 1972.05 751 722 160.8
B 4 170 65965 405.81 751 722 160.8
B 0 213 61238 376.41 751 722 160.8
C 0 209 439804 2201.81 723 719 199.4
C 15 205 265155 1326.02 723 719 199.4
C 13 3 228700 1143.22 723 719 199.4
D 2 226 795865 3990.99 711 684 199.2
D 2 249 448881 2249.49 711 684 199.2
D 7 110 350838 1757.41 711 684 199.2

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