ASTROSAT CZTI

Data Quality Report

Orbit 52117

Creation date: 2025-05-17T19:19:05.511440
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/AS1C09_011T07_9000006470_52117cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52117cztM0_level2_quad_clean.evt
Size (bytes)932,866,56063,763,200
Size889.7 MB 60.8 MB
Events in quadrant A3,257,892587,609
Events in quadrant B5,066,164596,309
Events in quadrant C9,813,883312,843
Events in quadrant D15,916,4543,567

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137093
B0192591
C0334071
D0515691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6161941.525726%
B61624507.302824%
C6162312050.632911%
D6162613399.529374%

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 7176 6162 37 37 0.52% 0.60%
B 7177 6163 245 245 3.41% 3.98%
C 7177 6162 2203 2203 30.70% 35.75%
D 7177 6163 5774 5774 80.45% 93.69%

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 4 3 159068 961.13 655 639 164.8
A 5 240 119230 719.45 655 639 164.8
A 3 130 93438 562.98 655 639 164.8
B 8 128 1037064 7839.29 632 611 132.2
B 4 171 271739 2050.7 632 611 132.2
B 10 254 203493 1534.51 632 611 132.2
C 15 217 3969366 31670.39 453 451 125.3
C 15 224 2940344 23459.2 453 451 125.3
C 13 3 294174 2343.79 453 451 125.3
D 6 42 7509075 134369.94 188 179 55.9
D 15 94 7066010 126441.39 188 179 55.9
D 5 206 168023 3003.53 188 179 55.9

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