ASTROSAT CZTI

Data Quality Report

Orbit 20170615_G07_027T01_9000001304_level2

Creation date: 2025-11-14T14:51:26.776618
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_027T01_9000001304cztM0_level2.fits modeM0/AS1G07_027T01_9000001304cztM0_level2_quad_clean.evt
Size (bytes)91,324,800111,487,680
Size87.1 MB 106.3 MB
Events in quadrant A526,598693,678
Events in quadrant B537,986716,086
Events in quadrant C554,354677,945
Events in quadrant D479,838621,585

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297620
B0205810
C0199280
D0224820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100
B02000
C01960
D02020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A94103373.581296%
B96651431.479565%
C96581161.201077%
D96572412.495599%

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 17661 9741 0 0 0.00% 0.00%
B 17706 10019 0 0 0.00% 0.00%
C 17683 10026 0 0 0.00% 0.00%
D 17680 9981 0 0 0.00% 0.00%

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 0 29 522 10.85 136 128 36.3
A 14 188 501 10.27 136 128 36.3
A 14 204 473 9.5 136 128 36.3
B 2 9 452 10.13 142 135 31.3
B 5 128 360 7.19 142 135 31.3
B 14 254 347 6.78 142 135 31.3
C 1 81 408 6.9 146 136 39.4
C 1 80 397 6.62 146 136 39.4
C 12 241 383 6.26 146 136 39.4
D 3 14 371 6.35 136 123 39.1
D 15 63 341 5.58 136 123 39.1
D 11 82 341 5.58 136 123 39.1

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