ASTROSAT CZTI

Data Quality Report

Orbit 40150

Creation date: 2024-06-27T22:12:56.294263
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/AS1A12_042T01_9000005522_40150cztM0_level2.fits modeM0/AS1A12_042T01_9000005522_40150cztM0_level2_quad_clean.evt
Size (bytes)1,511,424,000155,088,000
Size1.4 GB 147.9 MB
Events in quadrant A6,262,2901,345,423
Events in quadrant B5,796,5891,371,667
Events in quadrant C31,107,55857,060
Events in quadrant D11,822,6191,065,331

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260313
B0260163
C01009383
D0435933

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12383220.177663%
B12383310.250343%
C123831197096.664782%
D12383145411.741904%

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 15039 12385 9 9 0.06% 0.07%
B 15039 12385 12 12 0.08% 0.10%
C 15038 12382 11906 11906 79.17% 96.16%
D 15038 12383 1547 1547 10.29% 12.49%

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 919927 3383.18 1337 1308 271.5
A 12 189 71102 257.04 1337 1308 271.5
A 2 79 69956 252.82 1337 1308 271.5
B 4 251 292644 1151.38 1323 1289 253.0
B 5 255 82799 322.11 1323 1289 253.0
B 4 171 70423 273.2 1323 1289 253.0
C 9 187 28551470 217310.79 568 572 131.4
C 15 214 240730 1827.93 568 572 131.4
C 9 203 40247 301.98 568 572 131.4
D 12 227 5079184 16944.27 1229 1193 299.7
D 1 52 570138 1898.46 1229 1193 299.7
D 12 233 411855 1370.3 1229 1193 299.7

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