ASTROSAT CZTI

Data Quality Report

Orbit 10661

Creation date: 2024-06-27T16:02:39.221774
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/AS1G07_076T01_9000001538_10661cztM0_level2.evt modeM0/AS1G07_076T01_9000001538_10661cztM0_level2_quad_clean.evt
Size (bytes)825,338,880125,268,480
Size787.1 MB 119.5 MB
Events in quadrant A5,883,147750,319
Events in quadrant B6,872,029769,473
Events in quadrant C4,967,638779,708
Events in quadrant D6,536,988741,389

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249673
B0275171
C0224661
D0266786

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108694223.882602%
B108705515.068997%
C108701020.938362%
D108681181.085756%

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 11231 10871 216 216 1.92% 1.99%
B 11231 10872 286 286 2.55% 2.63%
C 11231 10872 24 24 0.21% 0.22%
D 11231 10872 23 23 0.20% 0.21%

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 15 223 563061 2241.83 1223 1194 250.6
A 15 239 247495 982.73 1223 1194 250.6
A 15 174 211868 840.58 1223 1194 250.6
B 4 239 1627554 6863.2 1231 1197 237.0
B 15 204 279956 1176.36 1231 1197 237.0
B 0 214 64124 265.55 1231 1197 237.0
C 4 254 202491 717.76 1210 1216 280.4
C 4 175 13011 42.06 1210 1216 280.4
C 8 128 11741 37.53 1210 1216 280.4
D 1 20 1400467 4796.9 1201 1166 291.7
D 13 249 211228 720.11 1201 1166 291.7
D 8 195 154112 524.31 1201 1166 291.7

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