ASTROSAT CZTI

Data Quality Report

Orbit 51418

Creation date: 2025-03-31T19:17:16.633470
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/AS1A13_090T01_9000006458_51418cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51418cztM0_level2_quad_clean.evt
Size (bytes)1,414,719,360145,045,440
Size1.3 GB 138.3 MB
Events in quadrant A8,807,2481,071,373
Events in quadrant B9,222,5551,164,773
Events in quadrant C26,459,477330,962
Events in quadrant D6,944,061987,985

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0342582
B0358872
C0868122
D0292332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02440
B02440
C02440
D02440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A120946995.779725%
B120956835.646962%
C12095887373.360893%
D120954353.596527%

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 13624 12094 402 402 2.95% 3.32%
B 13625 12095 255 255 1.87% 2.11%
C 13625 12095 7897 7897 57.96% 65.29%
D 13625 12096 251 251 1.84% 2.08%

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 12 250 884950 2781.05 1288 1252 317.8
A 15 174 859614 2701.32 1288 1252 317.8
A 4 175 507607 1593.53 1288 1252 317.8
B 10 254 1754232 6445.82 1274 1226 272.0
B 5 172 750239 2754.13 1274 1226 272.0
B 5 185 505796 1855.31 1274 1226 272.0
C 4 12 10132802 48303.19 768 767 209.8
C 15 179 8983059 42821.93 768 767 209.8
C 15 230 2210218 10533.28 768 767 209.8
D 6 42 489531 1395.11 1261 1213 350.0
D 2 153 287205 817.07 1261 1213 350.0
D 3 12 265002 753.64 1261 1213 350.0

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