ASTROSAT CZTI

Data Quality Report

Orbit 24525

Creation date: 2024-06-27T19:06:54.836151
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/AS1T03_183T01_9000003606_24525cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24525cztM0_level2_quad_clean.evt
Size (bytes)613,238,400137,666,880
Size584.8 MB 131.3 MB
Events in quadrant A3,909,035931,216
Events in quadrant B4,212,183939,238
Events in quadrant C3,692,577891,580
Events in quadrant D6,223,567858,888

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170682
B0177372
C0162202
D0240002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78891011.280264%
B78892863.625301%
C78891652.091520%
D78892583.270376%

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 8424 7891 1 1 0.01% 0.01%
B 8424 7891 76 76 0.90% 0.96%
C 8424 7891 1 1 0.01% 0.01%
D 8424 7891 111 111 1.32% 1.41%

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 14 111 274022 1451.65 939 917 188.1
A 6 16 14432 71.84 939 917 188.1
A 13 254 13622 67.53 939 917 188.1
B 3 64 528502 2941.86 935 910 179.3
B 12 111 21976 117.46 935 910 179.3
B 11 111 19281 102.44 935 910 179.3
C 14 238 142438 675.54 899 901 209.5
C 2 16 24694 113.56 899 901 209.5
C 3 233 12616 55.91 899 901 209.5
D 1 52 2647281 12089.18 899 868 218.9
D 8 195 64210 289.36 899 868 218.9
D 9 1 61620 277.52 899 868 218.9

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