ASTROSAT CZTI

Data Quality Report

Orbit 54593

Creation date: 2025-10-31T14:27:55.473908
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/AS1A14_127T09_9000006520_54593cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54593cztM0_level2_quad_clean.evt
Size (bytes)1,743,131,520349,467,840
Size1.6 GB 333.3 MB
Events in quadrant A18,455,7382,269,850
Events in quadrant B12,483,2262,469,536
Events in quadrant C15,865,8802,113,031
Events in quadrant D15,835,8412,051,153

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0718773
B0555503
C0650253
D0642583

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04960
B04960
C04960
D04960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2437912785.242217%
B243795452.235531%
C2438015216.238720%
D243807423.043478%

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 26539 24383 821 821 3.09% 3.37%
B 26539 24383 186 186 0.70% 0.76%
C 26540 24384 1286 1286 4.85% 5.27%
D 26540 24384 595 595 2.24% 2.44%

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 14 6192565 9617.79 2604 2536 643.6
A 11 3 1537177 2384.46 2604 2536 643.6
A 4 3 202715 311.03 2604 2536 643.6
B 10 14 610371 1082.92 2620 2522 561.3
B 6 255 465591 824.99 2620 2522 561.3
B 10 247 405573 718.06 2620 2522 561.3
C 13 3 3345721 4833.17 2526 2504 691.7
C 4 5 1404019 2026.12 2526 2504 691.7
C 9 38 322861 463.13 2526 2504 691.7
D 3 12 1918379 2655.49 2537 2426 721.5
D 2 172 1465411 2027.68 2537 2426 721.5
D 15 94 604223 834.08 2537 2426 721.5

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