ASTROSAT CZTI

Data Quality Report

Orbit 33518

Creation date: 2024-06-27T20:49:42.164425
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/AS1A11_060T01_9000004804_33518cztM0_level2.evt modeM0/AS1A11_060T01_9000004804_33518cztM0_level2_quad_clean.evt
Size (bytes)1,072,347,840156,703,680
Size1022.7 MB 149.4 MB
Events in quadrant A5,099,9661,035,474
Events in quadrant B9,467,025975,848
Events in quadrant C7,214,5221,006,733
Events in quadrant D9,942,784955,432

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224704
B0356083
C0290373
D0371173

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11155200.179292%
B11155129111.573286%
C111551641.470193%
D111555705.109816%

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 15274 11158 0 0 0.00% 0.00%
B 15274 11158 925 925 6.06% 8.29%
C 15274 11158 115 115 0.75% 1.03%
D 15274 11158 473 473 3.10% 4.24%

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 13 254 18050 63.6 1316 1289 263.5
A 3 137 13436 46.09 1316 1289 263.5
A 0 226 10813 36.14 1316 1289 263.5
B 5 255 2728881 11329.36 1250 1218 240.8
B 5 172 1731661 7187.4 1250 1218 240.8
B 12 111 30632 122.17 1250 1218 240.8
C 3 233 916267 3135.86 1266 1276 291.8
C 15 214 512066 1750.58 1266 1276 291.8
C 0 10 343450 1172.7 1266 1276 291.8
D 8 195 2403157 7857.62 1251 1216 305.7
D 2 120 990187 3235.28 1251 1216 305.7
D 2 250 834195 2724.98 1251 1216 305.7

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