ASTROSAT CZTI

Data Quality Report

Orbit 31604

Creation date: 2024-06-27T20:30:35.591891
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/AS1C06_002T03_9000004610_31604cztM0_level2.evt modeM0/AS1C06_002T03_9000004610_31604cztM0_level2_quad_clean.evt
Size (bytes)1,607,592,960249,770,880
Size1.5 GB 238.2 MB
Events in quadrant A12,487,3061,563,351
Events in quadrant B11,395,0171,764,642
Events in quadrant C7,439,9781,749,767
Events in quadrant D16,412,5821,508,056

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0544457719
B0498505547
C0349413684
D0678039164

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032028
B032434
C032232
D032430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0101
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14064304421.643914%
B141265603.964321%
C142853752.625131%
D14046221815.790973%

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 18827 14309 2274 2274 12.08% 15.89%
B 18823 14376 147 147 0.78% 1.02%
C 18816 14491 42 42 0.22% 0.29%
D 18815 14284 1749 1749 9.30% 12.24%

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 0 13 6768574 23124.01 1471 1437 292.6
A 15 174 40665 134.05 1471 1437 292.6
A 13 254 24367 78.35 1471 1437 292.6
B 6 159 4049475 13266.84 1621 1577 305.1
B 5 172 495323 1618.23 1621 1577 305.1
B 4 80 237226 772.33 1621 1577 305.1
C 3 233 710215 1904.03 1594 1602 372.2
C 14 238 275406 735.71 1594 1602 372.2
C 14 225 111542 295.41 1594 1602 372.2
D 8 195 6829699 19651.12 1462 1420 347.5
D 12 2 3222920 9271.16 1462 1420 347.5
D 12 218 318097 911.37 1462 1420 347.5

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