ASTROSAT CZTI

Data Quality Report

Orbit 27616

Creation date: 2024-06-27T19:42:12.179235
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/AS1T03_257T01_9000003976_27616cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27616cztM0_level2_quad_clean.evt
Size (bytes)496,353,60099,302,400
Size473.4 MB 94.7 MB
Events in quadrant A3,193,948657,164
Events in quadrant B4,240,692668,356
Events in quadrant C3,248,815636,203
Events in quadrant D3,917,635602,356

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135020
B0167700
C0136190
D0156650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6349330.519767%
B63492123.339109%
C6349630.992282%
D6349751.181288%

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 7604 6350 1 1 0.01% 0.02%
B 7604 6350 134 134 1.76% 2.11%
C 7604 6349 0 0 0.00% 0.00%
D 7604 6350 59 59 0.78% 0.93%

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 8 192 11634 65.94 821 806 164.2
A 4 2 11509 65.18 821 806 164.2
A 13 254 11301 63.91 821 806 164.2
B 3 64 773692 5061.78 819 799 152.7
B 10 245 109104 709.3 819 799 152.7
B 4 200 64064 414.33 819 799 152.7
C 14 238 128447 684.11 797 804 186.6
C 2 16 6816 32.22 797 804 186.6
C 13 61 5572 25.55 797 804 186.6
D 1 52 422944 2224.26 790 769 189.8
D 7 80 226900 1191.39 790 769 189.8
D 2 250 141254 740.15 790 769 189.8

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