ASTROSAT CZTI

Data Quality Report

Orbit 37639

Creation date: 2024-06-27T21:42:31.415377
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_075T01_9000005342_37639cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37639cztM0_level2_quad_clean.evt
Size (bytes)551,646,72067,852,800
Size526.1 MB 64.7 MB
Events in quadrant A7,840,223281,462
Events in quadrant B2,696,304476,539
Events in quadrant C2,676,061481,706
Events in quadrant D3,138,837447,641

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268683
B0114962
C0110712
D0130622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5224276152.852221%
B5224761.454824%
C5224210.401991%
D52241021.952527%

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 9319 5226 1650 1650 17.71% 31.57%
B 9319 5224 54 54 0.58% 1.03%
C 9319 5224 12 12 0.13% 0.23%
D 9319 5224 93 93 1.00% 1.78%

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 15 222 6075257 80337.55 375 368 75.6
A 10 83 196866 2598.59 375 368 75.6
A 6 10 93470 1231.23 375 368 75.6
B 5 200 142363 1270.78 588 575 111.6
B 5 172 112031 998.93 588 575 111.6
B 4 232 29101 255.66 588 575 111.6
C 15 214 240554 1765.91 585 589 135.9
C 14 254 88427 646.4 585 589 135.9
C 0 10 66989 488.64 585 589 135.9
D 2 249 397544 2840.2 572 558 139.8
D 2 250 292398 2087.94 572 558 139.8
D 12 233 73996 525.41 572 558 139.8

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