ASTROSAT CZTI

Data Quality Report

Orbit 27764

Creation date: 2024-06-27T19:44:07.604802
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/AS1A09_038T47_9000004004_27764cztM0_level2.evt modeM0/AS1A09_038T47_9000004004_27764cztM0_level2_quad_clean.evt
Size (bytes)402,212,16085,654,080
Size383.6 MB 81.7 MB
Events in quadrant A2,060,794606,925
Events in quadrant B4,581,132559,191
Events in quadrant C2,159,666583,723
Events in quadrant D3,087,732542,062

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A089080
B0164840
C091270
D0120850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4289140.326416%
B428888420.615672%
C4288511.189366%
D42883788.815299%

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 5564 4290 0 0 0.00% 0.00%
B 5563 4288 674 674 12.12% 15.72%
C 5563 4289 0 0 0.00% 0.00%
D 5563 4289 358 358 6.44% 8.35%

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 13 254 7204 62.59 532 522 106.7
A 8 192 6167 52.88 532 522 106.7
A 3 137 4857 40.61 532 522 106.7
B 3 64 2401371 26085.67 492 481 92.0
B 10 245 201413 2183.13 492 481 92.0
B 0 190 11991 125.06 492 481 92.0
C 14 238 84424 701.86 514 516 119.6
C 3 233 67029 556.36 514 516 119.6
C 0 10 3710 26.72 514 516 119.6
D 1 52 1038805 8773.45 493 478 118.3
D 2 250 87189 732.67 493 478 118.3
D 13 104 55302 463.24 493 478 118.3

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