ASTROSAT CZTI

Data Quality Report

Orbit 12181

Creation date: 2024-06-27T16:23:29.331289
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/AS1A04_160T01_9000001798_12181cztM0_level2.evt modeM0/AS1A04_160T01_9000001798_12181cztM0_level2_quad_clean.evt
Size (bytes)833,952,960182,882,880
Size795.3 MB 174.4 MB
Events in quadrant A5,151,2051,237,486
Events in quadrant B8,851,8151,157,749
Events in quadrant C4,587,5641,244,505
Events in quadrant D5,962,5761,179,558

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223143
B0332692
C0209982
D0244142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A103812152.071091%
B10381141313.611405%
C10381630.606878%
D103811501.444948%

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 11822 10383 8 8 0.07% 0.08%
B 11822 10383 778 778 6.58% 7.49%
C 11822 10384 1 1 0.01% 0.01%
D 11822 10384 61 61 0.52% 0.59%

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 1 162 172969 707.43 1194 1167 242.9
A 1 178 89590 364.1 1194 1167 242.9
A 1 161 78891 320.04 1194 1167 242.9
B 4 239 3481490 16446.58 1119 1090 211.6
B 15 204 192098 902.6 1119 1090 211.6
B 11 51 168347 790.37 1119 1090 211.6
C 14 234 9394 30.51 1169 1168 269.7
C 13 61 8696 27.92 1169 1168 269.7
C 4 175 7369 23.0 1169 1168 269.7
D 8 195 623698 2272.5 1158 1126 274.0
D 1 52 152287 551.77 1158 1126 274.0
D 13 104 151544 549.05 1158 1126 274.0

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