ASTROSAT CZTI

Data Quality Report

Orbit 26931

Creation date: 2024-06-27T19:34:38.361156
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_134T01_9000003896_26931cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26931cztM0_level2_quad_clean.evt
Size (bytes)1,551,450,240127,681,920
Size1.4 GB 121.8 MB
Events in quadrant A25,699,479146,964
Events in quadrant B7,413,551988,538
Events in quadrant C5,757,687972,709
Events in quadrant D7,314,664935,172

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0843750
B0296380
C0248470
D0295470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118451170098.775855%
B118455624.744618%
C118461501.266250%
D118462582.177950%

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 13094 11844 8246 8246 62.98% 69.62%
B 13095 11846 337 337 2.57% 2.84%
C 13096 11848 8 8 0.06% 0.07%
D 13096 11847 240 240 1.83% 2.03%

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 14 235 24606241 493734.71 242 237 49.8
A 0 13 125434 2512.16 242 237 49.8
A 8 192 16801 332.37 242 237 49.8
B 0 189 1407995 5274.21 1409 1374 266.7
B 10 246 174569 649.41 1409 1374 266.7
B 3 64 133340 494.81 1409 1374 266.7
C 14 238 216287 669.68 1368 1380 320.9
C 2 16 140629 433.92 1368 1380 320.9
C 0 207 38477 115.6 1368 1380 320.9
D 2 250 874248 2385.15 1362 1337 366.0
D 7 80 526245 1434.26 1362 1337 366.0
D 1 52 290428 789.92 1362 1337 366.0

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