ASTROSAT CZTI

Data Quality Report

Orbit 36645

Creation date: 2024-06-27T21:29:39.879882
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_049T04_9000005230_36645cztM0_level2.evt modeM0/AS1A11_049T04_9000005230_36645cztM0_level2_quad_clean.evt
Size (bytes)817,551,360127,379,520
Size779.7 MB 121.5 MB
Events in quadrant A5,292,135808,101
Events in quadrant B6,015,960788,031
Events in quadrant C6,251,705773,698
Events in quadrant D6,472,961743,838

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225314
B0246193
C0252683
D0265373

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10737300.279408%
B107372492.319084%
C107372852.654373%
D107373353.120052%

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 13513 10739 10 10 0.07% 0.09%
B 13513 10739 156 156 1.15% 1.45%
C 13513 10739 229 229 1.69% 2.13%
D 13513 10739 251 251 1.86% 2.34%

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 376586 1502.36 1246 1222 249.8
A 9 143 37361 144.64 1246 1222 249.8
A 13 6 30669 117.86 1246 1222 249.8
B 0 190 555275 2353.2 1226 1193 235.5
B 0 221 150890 635.77 1226 1193 235.5
B 5 255 129850 546.41 1226 1193 235.5
C 0 10 769638 2762.62 1192 1200 278.2
C 15 214 446874 1602.25 1192 1200 278.2
C 14 254 348375 1248.13 1192 1200 278.2
D 2 153 444692 1507.68 1191 1157 294.2
D 2 250 270687 916.19 1191 1157 294.2
D 13 171 249638 844.64 1191 1157 294.2

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