ASTROSAT CZTI

Data Quality Report

Orbit 21439

Creation date: 2024-06-27T18:27:50.033406
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_140T01_9000003160_21439cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21439cztM0_level2_quad_clean.evt
Size (bytes)587,790,720110,188,800
Size560.6 MB 105.1 MB
Events in quadrant A3,429,658741,926
Events in quadrant B3,584,441742,705
Events in quadrant C3,384,998715,423
Events in quadrant D6,936,010657,435

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144732
B0149262
C0143833
D0254512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68791031.497311%
B68801371.991279%
C68791131.642681%
D68796719.754325%

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 7829 6879 0 0 0.00% 0.00%
B 7830 6880 34 34 0.43% 0.49%
C 7829 6879 0 0 0.00% 0.00%
D 7829 6879 605 605 7.73% 8.79%

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 11 47 13400 70.51 885 868 177.7
A 13 254 10893 56.41 885 868 177.7
A 0 226 7680 38.33 885 868 177.7
B 10 247 102016 607.39 871 849 166.6
B 0 190 28354 165.13 871 849 166.6
B 12 111 19265 110.57 871 849 166.6
C 14 238 132073 677.58 834 841 193.7
C 13 61 5813 25.67 834 841 193.7
C 3 233 2538 8.76 834 841 193.7
D 12 235 1595230 7813.42 830 806 204.1
D 7 38 581327 2844.82 830 806 204.1
D 1 20 573470 2806.32 830 806 204.1

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