ASTROSAT CZTI

Data Quality Report

Orbit 19342

Creation date: 2024-06-27T18:01:37.638565
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/AS1A05_204T01_9000002856_19342cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19342cztM0_level2_quad_clean.evt
Size (bytes)567,685,440105,232,320
Size541.4 MB 100.4 MB
Events in quadrant A3,520,591685,538
Events in quadrant B3,693,150690,140
Events in quadrant C3,627,747662,922
Events in quadrant D5,845,810629,940

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155132
B0159042
C0156262
D0226099

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7451350.469736%
B7451580.778419%
C74511021.368944%
D74505367.194631%

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 7716 7452 2 2 0.03% 0.03%
B 7716 7452 11 11 0.14% 0.15%
C 7716 7452 1 1 0.01% 0.01%
D 7715 7450 431 431 5.59% 5.79%

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 9 143 29748 157.54 897 876 183.3
A 11 29 21572 112.92 897 876 183.3
A 5 16 10827 54.3 897 876 183.3
B 7 220 52380 303.58 892 870 169.7
B 0 229 39671 228.68 892 870 169.7
B 0 198 23949 136.02 892 870 169.7
C 14 238 133473 648.19 867 871 204.6
C 3 233 111671 541.62 867 871 204.6
C 13 61 6071 25.42 867 871 204.6
D 1 52 1116627 5442.23 850 826 205.0
D 7 238 595821 2902.04 850 826 205.0
D 10 66 589343 2870.45 850 826 205.0

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