ASTROSAT CZTI

Data Quality Report

Orbit 03136

Creation date: 2024-06-27T14:25:05.750861
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/AS1T01_118T01_9000000430_03136cztM0_level2.evt modeM0/AS1T01_118T01_9000000430_03136cztM0_level2_quad_clean.evt
Size (bytes)1,936,226,880279,040,320
Size1.8 GB 266.1 MB
Events in quadrant A10,809,2281,765,598
Events in quadrant B11,745,7921,789,600
Events in quadrant C22,871,9251,562,213
Events in quadrant D11,605,3121,695,237

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04820
B04820
C04820
D04820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0491776
B0510175
C0844195
D0522305

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A238081290.541835%
B238081220.512433%
C23808443518.628192%
D238082481.041667%

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 26893 23812 54 54 0.20% 0.23%
B 26893 23812 18 18 0.07% 0.08%
C 26893 23812 3673 3673 13.66% 15.42%
D 26893 23812 187 187 0.70% 0.79%

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 12 247 190859 344.38 2675 2616 546.6
A 8 15 175123 315.59 2675 2616 546.6
A 0 50 52897 91.99 2675 2616 546.6
B 15 204 507479 956.38 2728 2665 527.8
B 4 81 317995 597.4 2728 2665 527.8
B 0 187 130234 241.68 2728 2665 527.8
C 0 219 12445254 22507.01 2376 2384 552.8
C 14 223 530528 955.32 2376 2384 552.8
C 6 80 213563 381.99 2376 2384 552.8
D 13 223 505735 808.74 2588 2515 622.2
D 5 233 313816 500.3 2588 2515 622.2
D 13 239 289981 462.0 2588 2515 622.2

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