ASTROSAT CZTI

Data Quality Report

Orbit 47871

Creation date: 2024-08-04T18:08:49.654315
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/AS1A09_038T22_9000006368_47871cztM0_level2.fits modeM0/AS1A09_038T22_9000006368_47871cztM0_level2_quad_clean.evt
Size (bytes)173,136,96041,057,280
Size165.1 MB 39.2 MB
Events in quadrant A2,503,158265,084
Events in quadrant B1,095,411271,415
Events in quadrant C1,025,339271,439
Events in quadrant D1,579,801248,241

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095300
B052760
C052290
D065090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A261290.344564%
B261350.191351%
C261310.038270%
D2613291.109835%

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 2612 2612 0 0 0.00% 0.00%
B 2613 2613 1 1 0.04% 0.04%
C 2613 2613 0 0 0.00% 0.00%
D 2613 2613 34 34 1.30% 1.30%

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 10 83 1472092 25662.2 266 260 57.4
A 13 248 3387 54.52 266 260 57.4
A 3 137 3092 49.38 266 260 57.4
B 7 221 20697 385.99 263 255 53.0
B 0 198 8311 152.12 263 255 53.0
B 0 218 7521 137.2 263 255 53.0
C 14 67 5160 78.12 261 262 62.7
C 12 250 1820 24.85 261 262 62.7
C 13 61 1699 22.92 261 262 62.7
D 12 2 285786 4175.09 262 253 68.4
D 2 165 129640 1891.91 262 253 68.4
D 2 249 45594 662.98 262 253 68.4

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