ASTROSAT CZTI

Data Quality Report

Orbit 36667

Creation date: 2024-06-27T21:29:59.187442
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/AS1A11_049T05_9000005232_36667cztM0_level2.evt modeM0/AS1A11_049T05_9000005232_36667cztM0_level2_quad_clean.evt
Size (bytes)407,977,92068,817,600
Size389.1 MB 65.6 MB
Events in quadrant A2,701,042446,623
Events in quadrant B2,876,622447,709
Events in quadrant C3,068,915439,212
Events in quadrant D3,378,010408,296

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107453
B0113382
C0119882
D0129222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A487890.184502%
B4878861.763018%
C48781292.644526%
D48781933.956540%

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 7031 4879 3 3 0.04% 0.06%
B 7031 4879 52 52 0.74% 1.07%
C 7031 4879 92 92 1.31% 1.89%
D 7031 4879 173 173 2.46% 3.55%

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 198320 1554.46 643 633 127.2
A 13 254 7206 51.69 643 633 127.2
A 10 255 6556 46.57 643 633 127.2
B 5 255 272827 2303.62 632 618 118.2
B 0 221 31798 263.87 632 618 118.2
B 0 189 22321 183.67 632 618 118.2
C 0 10 395035 2822.67 616 622 139.7
C 15 214 224573 1602.73 616 622 139.7
C 14 254 29065 203.56 616 622 139.7
D 12 233 348232 2337.7 616 600 148.7
D 13 171 259403 1740.36 616 600 148.7
D 2 153 143340 959.88 616 600 148.7

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