ASTROSAT CZTI

Data Quality Report

Orbit 34223

Creation date: 2022-01-26T11:56:02.820523
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_003T01_9000004886_34223cztM0_level2.evt modeM0/AS1T05_003T01_9000004886_34223cztM0_level2_quad_clean.evt
Size (bytes)560,856,96081,544,320
Size534.9 MB 77.8 MB
Events in quadrant A2,962,706533,012
Events in quadrant B6,470,766478,520
Events in quadrant C3,150,657551,090
Events in quadrant D4,028,047520,169

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122863
B0228602
C0126342
D0156092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5509641.161735%
B5509129523.506989%
C5509631.143583%
D5509961.742603%

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 7122 5510 43 43 0.60% 0.78%
B 7122 5510 1089 1089 15.29% 19.76%
C 7122 5510 56 56 0.79% 1.02%
D 7122 5510 94 94 1.32% 1.71%

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 15 47 427669 3321.61 640 626 128.6
A 10 83 23028 174.25 640 626 128.6
A 9 143 19510 146.88 640 626 128.6
B 5 31 2255713 19830.22 592 576 113.7
B 5 15 820372 7208.76 592 576 113.7
B 5 172 815596 7166.76 592 576 113.7
C 15 214 242433 1659.59 628 633 145.7
C 14 254 131521 898.35 628 633 145.7
C 4 254 121363 828.63 628 633 145.7
D 8 195 844173 5502.53 628 610 153.3
D 7 80 400908 2611.13 628 610 153.3
D 12 0 82378 533.37 628 610 153.3

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