ASTROSAT CZTI

Data Quality Report

Orbit 37008

Creation date: 2024-06-27T21:34:12.107868
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/AS1C07_015T02_9000005258_37008cztM0_level2.evt modeM0/AS1C07_015T02_9000005258_37008cztM0_level2_quad_clean.evt
Size (bytes)430,084,80076,904,640
Size410.2 MB 73.3 MB
Events in quadrant A2,790,545490,555
Events in quadrant B2,856,955496,676
Events in quadrant C2,976,924493,680
Events in quadrant D4,013,175449,045

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118333
B0120432
C0122922
D0157412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5696110.193118%
B5696280.491573%
C5696510.895365%
D56963355.881320%

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 7219 5697 0 0 0.00% 0.00%
B 7219 5697 17 17 0.24% 0.30%
C 7219 5697 36 36 0.50% 0.63%
D 7219 5697 306 306 4.24% 5.37%

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 10 83 241592 1816.76 652 638 132.6
A 13 6 13462 96.69 652 638 132.6
A 12 189 9079 63.64 652 638 132.6
B 5 172 78717 628.56 646 629 124.2
B 0 229 41905 332.24 646 629 124.2
B 15 85 39444 312.43 646 629 124.2
C 15 214 243041 1634.61 632 637 148.3
C 10 20 111278 746.09 632 637 148.3
C 0 10 88559 592.89 632 637 148.3
D 2 250 994160 6530.21 618 600 152.1
D 2 153 208615 1367.19 618 600 152.1
D 1 52 158362 1036.9 618 600 152.1

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