ASTROSAT CZTI

Data Quality Report

Orbit 28101

Creation date: 2024-06-27T19:48:04.907476
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/AS1A10_057T05_9000004060_28101cztM0_level2.evt modeM0/AS1A10_057T05_9000004060_28101cztM0_level2_quad_clean.evt
Size (bytes)561,810,24081,426,240
Size535.8 MB 77.7 MB
Events in quadrant A3,724,359503,899
Events in quadrant B3,585,349496,266
Events in quadrant C3,892,151473,994
Events in quadrant D5,309,659475,211

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155740
B0153260
C0162550
D0211500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7418821.105419%
B74191131.523116%
C74192333.140585%
D74191241.671384%

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 7678 7419 1 1 0.01% 0.01%
B 7679 7420 0 0 0.00% 0.00%
C 7679 7420 25 25 0.33% 0.34%
D 7679 7420 59 59 0.77% 0.80%

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 5 98 127660 685.02 924 906 185.0
A 6 16 12136 60.69 924 906 185.0
A 13 254 11993 59.92 924 906 185.0
B 12 111 21605 118.12 906 881 175.4
B 11 111 19673 107.11 906 881 175.4
B 14 111 17501 94.73 906 881 175.4
C 15 208 293045 1430.42 871 876 204.3
C 14 238 140158 681.9 871 876 204.3
C 3 233 29938 142.28 871 876 204.3
D 8 195 1270545 5923.55 892 866 214.3
D 1 52 251618 1169.86 892 866 214.3
D 2 250 198117 920.25 892 866 214.3

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