ASTROSAT CZTI

Data Quality Report

Orbit 40785

Creation date: 2024-06-27T22:20:28.587706
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/AS1A12_095T02_9000005568_40785cztM0_level2.fits modeM0/AS1A12_095T02_9000005568_40785cztM0_level2_quad_clean.evt
Size (bytes)385,260,480103,314,240
Size367.4 MB 98.5 MB
Events in quadrant A3,361,577691,594
Events in quadrant B3,037,348713,925
Events in quadrant C3,212,041677,063
Events in quadrant D4,152,900599,775

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137513
B0133712
C0135605
D0167772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6388130.203507%
B6388380.594865%
C6386600.939555%
D63883325.197245%

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 9044 6389 4 4 0.04% 0.06%
B 9044 6390 19 19 0.21% 0.30%
C 9044 6389 50 50 0.55% 0.78%
D 9044 6390 265 265 2.93% 4.15%

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 572504 3907.58 705 690 146.3
A 13 248 35248 236.16 705 690 146.3
A 12 189 14240 92.6 705 690 146.3
B 5 255 157683 1137.73 702 681 138.0
B 4 171 38777 276.07 702 681 138.0
B 15 85 24994 176.19 702 681 138.0
C 15 214 275460 1710.55 688 693 160.6
C 14 254 190057 1178.88 688 693 160.6
C 0 10 61459 378.3 688 693 160.6
D 2 153 453637 2769.72 669 649 163.5
D 2 249 335726 2048.78 669 649 163.5
D 13 249 334856 2043.46 669 649 163.5

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