ASTROSAT CZTI

Data Quality Report

Orbit 10748

Creation date: 2024-06-27T16:03:14.577622
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/AS1A03_078T01_9000001546_10748cztM0_level2.evt modeM0/AS1A03_078T01_9000001546_10748cztM0_level2_quad_clean.evt
Size (bytes)1,549,022,400221,538,240
Size1.4 GB 211.3 MB
Events in quadrant A10,353,0391,336,609
Events in quadrant B11,170,1701,380,014
Events in quadrant C8,569,4711,384,617
Events in quadrant D15,532,8741,294,170

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0433806
B0454255
C0389205
D0591965

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A190697694.032723%
B190697423.891132%
C190691870.980649%
D1906915698.228014%

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 21054 19072 276 276 1.31% 1.45%
B 21054 19071 276 276 1.31% 1.45%
C 21054 19074 4 4 0.02% 0.02%
D 21054 19072 1103 1103 5.24% 5.78%

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 15 239 1394415 3106.07 2215 2165 448.2
A 15 223 177950 392.17 2215 2165 448.2
A 14 254 69775 150.84 2215 2165 448.2
B 4 239 1774549 4112.58 2234 2178 431.0
B 0 214 249803 574.58 2234 2178 431.0
B 4 81 136826 312.43 2234 2178 431.0
C 14 234 35427 65.68 2186 2195 506.0
C 13 61 16221 27.72 2186 2195 506.0
C 14 225 10149 15.72 2186 2195 506.0
D 2 16 4367411 8504.48 2127 2064 513.3
D 1 52 946373 1839.68 2127 2064 513.3
D 12 233 717802 1394.38 2127 2064 513.3

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