ASTROSAT CZTI

Data Quality Report

Orbit 21939

Creation date: 2024-06-27T18:34:14.872631
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/AS1A07_007T02_9000003244_21939cztM0_level2.evt modeM0/AS1A07_007T02_9000003244_21939cztM0_level2_quad_clean.evt
Size (bytes)189,181,44020,753,280
Size180.4 MB 19.8 MB
Events in quadrant A1,252,606115,760
Events in quadrant B1,343,013117,222
Events in quadrant C1,247,578116,040
Events in quadrant D1,726,338111,150

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052331
B054978
C051541
D068391

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2326642.751505%
B2325783.354839%
C2325713.053763%
D2325743.182796%

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 3396 2326 0 0 0.00% 0.00%
B 3394 2324 12 12 0.35% 0.52%
C 3395 2325 0 0 0.00% 0.00%
D 3395 2325 11 11 0.32% 0.47%

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 3425 46.53 325 318 66.8
A 0 226 2771 36.74 325 318 66.8
A 3 137 2614 34.38 325 318 66.8
B 3 64 79267 1254.23 320 313 63.0
B 0 229 8158 124.62 320 313 63.0
B 12 111 7716 117.6 320 313 63.0
C 14 238 48950 669.35 305 308 72.7
C 10 22 7163 94.33 305 308 72.7
C 13 61 2155 25.42 305 308 72.7
D 12 235 411603 5389.5 308 299 76.3
D 1 52 110587 1445.15 308 299 76.3
D 11 176 30693 398.27 308 299 76.3

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