ASTROSAT CZTI

Data Quality Report

Orbit 00857

Creation date: 2024-06-27T14:03:53.644720
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/AS1P01_165T02_9000000120_00857cztM0_level2.evt modeM0/AS1P01_165T02_9000000120_00857cztM0_level2_quad_clean.evt
Size (bytes)1,143,164,16083,240,640
Size1.1 GB 79.4 MB
Events in quadrant A8,646,630510,722
Events in quadrant B9,158,580505,350
Events in quadrant C8,420,439498,108
Events in quadrant D7,907,357494,541

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308920
B0324480
C0301830
D0288160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7350100.136054%
B7350340.462585%
C735150.068018%
D7350200.272109%

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 7695 7352 268 268 3.48% 3.65%
B 7695 7351 358 358 4.65% 4.87%
C 7696 7353 267 267 3.47% 3.63%
D 7695 7352 215 215 2.79% 2.92%

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 14 79 23245 38.67 2243 2270 542.4
A 0 214 11859 17.68 2243 2270 542.4
A 11 79 8582 11.64 2243 2270 542.4
B 15 22 38378 64.66 2368 2381 556.7
B 5 249 32971 54.95 2368 2381 556.7
B 4 222 26952 44.14 2368 2381 556.7
C 3 111 28967 44.63 2137 2215 599.4
C 15 241 23403 35.35 2137 2215 599.4
C 3 79 17190 24.98 2137 2215 599.4
D 13 73 53666 80.79 2050 2126 638.0
D 13 13 48799 73.16 2050 2126 638.0
D 1 4 38142 56.46 2050 2126 638.0

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