ASTROSAT CZTI

Data Quality Report

Orbit 40240

Creation date: 2024-06-27T22:14:00.517995
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/AS1T05_086T01_9000005534_40240cztM0_level2.fits modeM0/AS1T05_086T01_9000005534_40240cztM0_level2_quad_clean.evt
Size (bytes)354,839,04097,992,000
Size338.4 MB 93.5 MB
Events in quadrant A3,678,860654,584
Events in quadrant B2,804,124685,520
Events in quadrant C2,701,487647,722
Events in quadrant D3,517,854590,404

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144113
B0119262
C0114202
D0140882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55581913.436488%
B5558360.647715%
C555890.161929%
D5559961.726929%

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 7292 5559 121 121 1.66% 2.18%
B 7292 5559 21 21 0.29% 0.38%
C 7292 5559 4 4 0.05% 0.07%
D 7293 5560 83 83 1.14% 1.49%

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 13 248 621741 4913.53 618 607 126.4
A 10 83 516447 4080.59 618 607 126.4
A 2 79 117217 922.45 618 607 126.4
B 4 171 126405 1034.78 625 608 121.6
B 5 255 51028 414.75 625 608 121.6
B 0 245 49017 398.2 625 608 121.6
C 15 214 241505 1680.64 611 616 143.3
C 0 10 41964 288.48 611 616 143.3
C 9 187 19998 135.22 611 616 143.3
D 12 227 384473 2579.58 609 594 148.8
D 2 249 322345 2162.09 609 594 148.8
D 13 249 153265 1025.92 609 594 148.8

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