ASTROSAT CZTI

Data Quality Report

Orbit 37509

Creation date: 2024-06-27T21:40:56.733242
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/AS1A11_030T02_9000005328_37509cztM0_level2.evt modeM0/AS1A11_030T02_9000005328_37509cztM0_level2_quad_clean.evt
Size (bytes)461,629,44062,631,360
Size440.2 MB 59.7 MB
Events in quadrant A2,795,531386,586
Events in quadrant B3,178,178388,231
Events in quadrant C3,445,217380,374
Events in quadrant D4,193,695361,553

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117543
B0128932
C0134822
D0162042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5417120.221525%
B54171132.086025%
C54171703.138268%
D54171522.805981%

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 9391 5419 3 3 0.03% 0.06%
B 9391 5419 87 87 0.93% 1.61%
C 9391 5419 175 175 1.86% 3.23%
D 9391 5419 121 121 1.29% 2.23%

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 10 83 292426 2317.89 621 608 125.9
A 15 222 40635 317.93 621 608 125.9
A 13 248 32693 254.85 621 608 125.9
B 5 172 499877 4190.32 614 598 119.2
B 15 35 79334 660.81 614 598 119.2
B 0 190 79306 660.58 614 598 119.2
C 14 254 772509 5411.3 604 608 142.6
C 15 214 233199 1630.54 604 608 142.6
C 0 10 68315 474.65 604 608 142.6
D 1 52 1083453 7315.83 602 586 148.0
D 13 249 228466 1539.55 602 586 148.0
D 10 199 185281 1247.8 602 586 148.0

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